COB led strip price is only meaningful read next to a specification sheet. Two quotations described as “24V COB strip” can sit far apart and both be honest, because the LED pitch, the copper weight in the circuit, the colour bin tolerance and the encapsulation behind them belong to different products.
This guide is for importers, distributors, contractors and specifiers sourcing COB LED Strip. It covers how to normalise quotations so they can be compared, which line items actually move the rate, and how to read what a cob led strip manufacturer is offering rather than what the header of the quotation says.
Why Two COB Quotations Are Rarely Comparable
A COB strip is a continuous phosphor-coated die line on a flexible printed circuit, so the parts a buyer cannot see carry most of the cost. Before any figure is compared, both quotations must describe the same object — and these five fields most often differ silently between offers identical on the cover line.
| Field | Why it moves the rate | What to ask for in writing |
|---|---|---|
| LED pitch and die count | Normally the dominant material line: a 480 LEDs/m build carries 50% more die than 320 LEDs/m at the same width. | LEDs/m, W/m and lm/m together — not LEDs/m alone. |
| Drive current per die | The same lm/m is reachable with more die run softly or fewer die run hard. The second is cheaper and ages faster. | W/m at the stated lm/m, and the LM-80 basis for the lumen maintenance claim. |
| Copper weight in the FPC | 1 oz and 2 oz per square foot are both sold as “COB strip”. The 2 oz build costs more and drops less voltage. | Copper weight, PCB width in mm, and measured drop at the end of your longest run. |
| Colour tolerance | Tightening the bin from 5 SDCM to 3 SDCM reduces usable yield per wafer lot, and yield is priced. | SDCM step count, and whether it holds across production lots or only within one. |
| Encapsulation | An IP20 build and a sealed build are different assemblies, not one strip with a coating added. | The ingress figure with the test it came from, quoted per assembly. |
Answer all five in writing and the comparison becomes arithmetic. Answer none, and the number on the quotation is not a price for a product — it is a price for an unspecified object.
Cost per Metre Is the Wrong Unit
Cost per metre only compares products delivering the same light. Once density differs, the honest unit is cost per delivered lumen, and it has to include what the strip forces on the rest of the system. Divide each rate per metre by the stated lm/m for a first pass, then apply the two multipliers a strip decision controls:
- Driver capacity. A driver should sit at roughly 80% of its rating for thermal headroom. A build drawing 14 W/m over a 20 m run needs 280 W of load, so 350 W of driver. A denser build that pushes past a driver size step adds cost that never appears on the strip line.
- Copper and feed layout. Voltage drop should stay inside about 10% at the far end. A thin-copper build hits that limit sooner, meaning more injection points, cable and labour. Feeding from both ends roughly halves the worst-case drop and can rescue a marginal run without changing the strip.
A cheaper strip that forces an extra driver and two extra feed points across a floor plate is not cheaper. This is also where 12V and 24V separate: the higher bus carries the same power at half the current, so a 24v cob led strip holds a longer continuous run on the same copper before the drop limit is reached.
Factory Supply and Stocked Supply Solve Different Problems
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Direct factory supply and stocked distribution are not two grades of the same offer. Direct supply gives control over the build — copper weight, bin tolerance, reel length, label format — but the buyer carries the specification work and the approval loop. Stocked supply removes that loop, though the build is fixed at whatever the stockholder committed to and is rarely documented to the level above.
The choice turns on one question: does this specification have to be reproduced later? A distributor holding a catalogue line, or a contractor phasing a building floor by floor, is buying repeatability rather than a rate — a strip that matches this quarter but not next fails on site even when every delivery was individually correct. Where a project ships once, stocked supply is usually the lower total cost. Efficiency is what carries the long-run figure either way, and the U.S. Department of Energy LED lighting guidance explains why: the energy a fitting draws over its service life dwarfs its purchase cost, so a small efficacy difference outruns a large rate difference on any installation running long hours.
Where the Lowest Offer Recovers Its Margin
A quotation well below the field is usually not mispriced — it is priced correctly for a different build, and the saving comes from one of four places.
Colour tolerance widened
Loosening the bin is the fastest saving available because it raises usable yield. At 5 SDCM the difference between two reels is visible on a continuous cove; at 3 SDCM it generally is not. That saving lands on site, when two reels in one corridor read differently and the only fix is replacing the run.
Copper thinned
Halving copper weight is invisible on arrival and appears as excess voltage drop on the first long run — the far end reads dimmer and slightly warmer. The remedy is more feed points, so the saving transfers to the electrician.
Die driven harder
Fewer die at higher current reaches the stated lm/m with less material, and runs hotter doing it. Junction temperature governs lumen maintenance, so without an LM-80 basis the depreciation curve is unstated and the shortfall appears two or three years after handover.
Adhesive substituted
The tape holds the strip against a metal profile through repeated thermal cycles. A substituted adhesive passes on the bench and releases at the ceiling — the most expensive of the four, because access is the cost, not the strip.
None of these is a defect; each is a legitimate choice at a lower rate. The error is comparing a build that made all four against one that made none, and treating the gap as negotiating room.
What Different Buyers Should Actually Optimise
The same quotation should be read differently depending on what the buyer is exposed to. Optimising the wrong variable is the most common sourcing error here.
Distributor and importer
The exposure is inventory that cannot be sold together. Two deliveries of one catalogue line must match, so the controlling term is lot-to-lot colour consistency rather than the rate, and reel length and label format matter for the same reason. A cob led strip wholesale supply programme is built around holding a few SKUs stable across repeat call-offs, not around carrying the widest range. Sample display behaves differently: short lengths of many variants mounted side by side, as on a LED strip distributor showroom sample wall, cost more per metre and should be budgeted apart from stock.
Contractor and installer
The exposure is labour and rework. Cut interval, feed layout and profile fit decide how long a run takes. A 24V build cuts in series groups, so its cut unit is roughly twice the 12V interval — a real constraint when a joinery module needs a fixed finished length. Check the interval in mm against the shortest segment on the drawing before comparing rates.
Specifier and lighting brand
The exposure is a written performance figure that must be met at handover. CRI, SDCM step and lumen maintenance basis are contractual, and the rate follows from them. Buying below the specification is not a saving but a variation waiting to be raised.
Comparing Three Real Build Points
Density, width and bus voltage move both appearance and rate. Comparing three defined build points is more useful than asking for a rate card, because it shows what the money buys.
| Build | Where the rate sits | What it is for |
|---|---|---|
| COB 320 LEDs/m, 8 mm | Lowest die count of the three | Shallow joinery and cabinet work, where the diffuser sits close and viewing distance is short. |
| COB 480 LEDs/m, 8 mm, 24V | Mid — 50% more die on the same width | Continuous architectural lines where output and run length both matter but the 8 mm width must still fit an existing groove. |
| COB 528 LEDs/m, 10 mm, 24V | Highest — more die plus wider circuit | Higher output runs, and lines where the extra 2 mm of copper width helps the drop budget. |
The 8 mm-versus-10 mm step is worth isolating: the wider circuit costs more per metre and needs a wider profile, but carries more copper, extending the run reachable inside the 10% drop limit. On a long uninterrupted line that can remove a feed point, making the wider strip the cheaper installed answer.
Density belongs to the diffuser, not the budget — depth must be at least equal to the LED pitch for individual emitters to blend. COB pitch satisfies that in almost any profile, which is the main reason it is specified over discrete packages for visible lines, though a shallow surface channel will still show structure if density drops too far. Buyers who read cob led strip price against pitch and diffuser depth together rarely over-buy density.
Ingress Rating and What It Actually Costs
Sealed builds are often treated as a surcharge on an indoor strip. They are not: encapsulation changes the thermal path, the bend radius, the cut behaviour and the termination method, producing a different assembly with a different rate structure.
An ingress figure means nothing unless it is stated against IEC 60529 and tied to the assembly as supplied. Two consequences follow: the rating covers the sealed unit including end caps and gland, so a cut end is unrated until re-sealed on site — labour that belongs in the comparison — and encapsulation traps heat, so a sealed build at the same W/m runs at a higher junction temperature than the open equivalent and may need de-rating.
For a dry indoor run the standard IP20 build is correct and encapsulation buys nothing. Where humidity is involved, the sealed build should be quoted as its own line with its own approval rather than as a variant of the indoor rate. Low-voltage strip also sits inside the SELV provisions of IEC 61140, which keeps driver selection inside the scope of the cost comparison.
How to Write an RFQ That Returns a Usable Number
Vague enquiries return vague figures, and the supplier is not at fault: without constraints they must guess a build, and they will guess the one that quotes competitively.
- Run geometry. Longest continuous length, shortest segment on the drawing, and whether feed is available at one end or both — this fixes bus voltage, copper weight and cut interval in one step.
- Target light level and distance. The lux required on the working plane and how far the strip sits from it. Density follows from this, and stating it directly rather than asking for LEDs/m avoids over-buying.
- Profile and diffuser. Internal groove width in mm and diffuser depth, which constrain PCB width before density is discussed.
- Colour requirement. CCT, CRI and SDCM step, with whether it must hold across production lots or only within one.
- Environment. Dry indoor, humid or exposed, and if rated, against which IEC 60529 test.
- Repeatability. Whether the specification will be reordered — the single term that most changes which supply model fits.
- Packaging and accessories. Neutral or private label, reel length, carton marks, and which of driver, connectors, profile and wire sit inside scope.
Ask for the response broken out by strip, accessory, packaging and freight. A single combined figure cannot be compared against anything, and a supplier unwilling to separate the lines is usually recovering margin in one of them. The same discipline applies when selecting an LED strip supplier for discrete-package ranges.
Where a strip is one element of a building scheme, its figure belongs inside the whole-system budget for commercial LED lighting solutions, because driver, control and mounting frequently exceed the strip itself. Design targets for those spaces are set in documents such as EN 12464-1, with measurement methodology from bodies including the Illuminating Engineering Society — which is what turns a light-level requirement into a number a supplier can quote against.
Reducing Cost Without Moving the Specification
Real savings come from removing variety and mismatch, not from thinning the build. Each of the following reduces cost while leaving the delivered lighting result unchanged.
- Standardise bus voltage across the project. One voltage means one driver family, one spares holding, and no chance of a 12V reel reaching a 24V circuit.
- Cut the CCT count. Every extra colour temperature is a separate lot with its own binning; three CCTs across a building rarely earn their cost over two.
- Size density to the diffuser, then stop. Once pitch is shorter than diffuser depth, extra density adds cost without adding visible smoothness.
- Feed long runs from both ends. Halving the worst-case drop is free at design stage and can let a thinner build meet the same limit.
- Reorder an approved specification rather than re-specifying. A repeat of a known build carries no approval cycle and no colour-matching risk.
The test of a supplier is whether they will say which of these applies to your drawing and which does not. One who responds to pressure by cutting the rate without naming what changed in the build has changed the product, and the difference surfaces on site rather than on the quotation.
Common Questions on Reading COB Quotations
Why does cob led strip price vary so widely for the same description?
Because the description does not define the build. Die count per metre, drive current, copper weight, SDCM step and encapsulation move independently, and none appear in a phrase like “24V COB strip”. Fix those five fields in writing and the spread between honest offers narrows sharply.
Is higher density always worth the extra cost?
Only up to the point where the diffuser stops showing structure. Depth must be at least equal to the LED pitch for emitters to blend; past that, extra density raises output and cost but adds no visible uniformity.
How should 12V and 24V be compared on cost?
Not on the strip rate alone. The higher bus carries the same power at half the current, so it drops less voltage and reaches a longer continuous run inside the 10% limit, removing feed points and cable. Against that, 24V cuts in longer series groups, so its minimum usable segment is roughly twice the 12V interval.
What is the most common costing mistake here?
Comparing rate per metre when the builds deliver different lumens. Normalise to cost per delivered lumen, then add what each forces on driver count and feed layout. A strip saving a little per metre while adding a driver and two injection points is more expensive installed.
Send Us Your Specification
The fastest route to a comparable figure is to send the constraints rather than ask for a rate. Run lengths, profile groove width, target light level, CCT and SDCM requirement, and whether the specification will be reordered are enough to define the build. Talk to our engineers and we will quote against those constraints, and name what we changed if we propose anything different.
