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Who this checklist is for
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Step 1: Get the spec sheet, not the catalogue page
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Step 2: Ask for the certification name, not the sticker
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Step 3: Break every quote down into TCO components
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Step 4: Nail down MOQ, price breaks, and tooling cost
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Step 5: Count the real premium of OEM beyond the unit price
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Step 6: Watch what the supplier says they don't do
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Step 7: Reconcile against historical invoices, not the new quote
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The mistakes I see most often
Who this checklist is for
If you're pricing commercial lighting wholesale — whether that's comparing quotes on authentic BEGA light fixtures or vetting a recessed downlight OEM — this checklist is meant to be used as-is. It's not a buying guide. Its job is to stop you from finding out, after the PO is signed, that the real cost sat 20% above the unit price you compared against.
There are seven steps. The first two are filters. Steps three through five are where the money is. Steps six and seven are the ones I think most buyers skip — and they're the ones that have saved me the most.
Step 1: Get the spec sheet, not the catalogue page
A supplier's catalogue page and a quote are not comparable documents. "Outdoor wall light, die-cast aluminium body" tells you almost nothing. You want this pulled down into a column-by-column table: housing material and finish, lens type and beam angle, driver brand and model number, CCT range and CRI, IP and IK rating, dimming protocol, mounting method.
If a supplier won't put that on a spec sheet — or the sheet comes back with hand-wavy entries — I drop them from the shortlist before we even talk price. You can't compare an unknown against a known. Full stop.
Step 2: Ask for the certification name, not the sticker
Safety certification is the floor here: UL or ETL listing, DLC qualified products list for commercial fixtures, and Title 24 if the project lands in California. That part isn't new. The part almost everyone skips is the verification.
Plenty of suppliers write "UL listed" on the quote and stop there. What you actually want is the certificate number and the named certificate holder, so you can look it up through UL's Product iQ system and confirm the specific model number on the certificate matches the model you're ordering. DLC's qualified products list is searchable on designlights.org — plug in the SKU and see if it's actually there.
Most of my peers don't do this. I've seen projects where the fixture worked fine but the rebate wasn't paid, purely because the model number wasn't on the list. The product wasn't wrong. The paperwork was.
Companies get burned not on "is it certified" but on "is this model certified under this certificate."
Step 3: Break every quote down into TCO components
A commercial lighting quote that only gives you a per-fixture price is not a quote — it's a headline. I force every one into eight lines: fixture body, driver (separately priced or bundled?), optical system or lens, mounting hardware, packaging, freight, duties or customs, and the exact scope of the warranty.
Driver is where most of the leakage sits. A quote that says "integrated driver" sounds clean, but check whether the warranty actually covers the driver or just the housing. Drivers fail more often than anything else in the fixture. If the warranty doesn't cover them, the word "integrated" is a cost, not a feature.
And here's a causation flip that took me a while to appreciate: people assume higher price means better quality. The causality runs the other way. Suppliers who can hold consistency earn the right to charge more — not the other way around. A 15% premium on a fixture that ships without driver failures is 15% you save on rework. The math only looks the same if you don't track the rework.
Step 4: Nail down MOQ, price breaks, and tooling cost
Commercial lighting wholesale is priced on quantity tiers. Ask specifically: what's the MOQ, where are the breakpoints, is the breakpoint per-SKU or per-order, and is there a separate sampling or setup charge.
For OEM and private label — and this is where the recessed lighting OEM conversation gets real — also ask: standard tooling or custom tooling? Who pays for the one-time mold cost, how much is it, and who owns the mold after the invoice clears?
I've been going back and forth for two weeks between stocking branded BEGA fixtures and running a private-label recessed downlight program. The branded line gives resale confidence and specifier acceptance. The OEM line comes in noticeably lower per unit on comparable optics — but once you load private tooling, packaging design, and re-certification into the total, the "savings" get eaten into for the first 18 to 24 months. There's no universal right answer. It only resolves when you put both into your own tracking sheet.
Step 5: Count the real premium of OEM beyond the unit price
When you're sourcing recessed lighting OEM, the quote is only the starting point. The rest of the cost stack is: tooling and sampling, packaging design, who holds the certification, working capital locked in by MOQ, and delivery lead time that runs longer than a stock program.
I don't have hard industry data on first-article defect rates, so I won't pretend to. What I can say, based on our own six years and roughly $1.2M in cumulative lighting spend, is that somewhere between 8% and 12% of first shipments have a driver issue or a CCT inconsistency that requires either rework or a credit. That number isn't there to win a negotiation. It's there so that when you compare a "lowest quote" against a mid-range quote, you're comparing the real cost of both — including the rework the low quote is likely to bring with it.
Step 6: Watch what the supplier says they don't do
A few years back a supplier told me straight: "Lens engineering isn't our strength. We do drivers and housings. The lens comes through a partner we've worked with for years." That's the supplier we ended up putting our core order with.
A specialist who knows their boundary is more trustworthy on everything else. It's not a knock on generalists — one-stop sourcing is a real thing, and it works when the integrator is honest about where their depth ends. What you're screening for is the supplier who says yes to everything. "One-stop" sounds great on a slide. In delivery it's a chain of dependencies, and every link is somebody else's timeline.
If you ask me, the vendor who tells you "for this part you should go elsewhere" has earned more of your business than the one who says "we can handle that too" about something outside their lane.
Step 7: Reconcile against historical invoices, not the new quote
A fresh quote is the most polished document you'll ever get from a supplier. The useful information lives in your last three to five invoices: quoted lead time vs. actual arrival, first-article rejection rate, and how fast the supplier responded when something went wrong.
Honestly, I've never fully understood why sampling fees vary so wildly across suppliers — some quote a few hundred dollars all-in, others quote several thousand. My best guess is it comes down to whether the supplier runs an internal sample shop or outsources it, but that's a guess, not a finding. So in our cost tracker, sampling sits in its own column. I don't benchmark it across vendors. I just fold it into each vendor's own total and compare the totals.
While we're on lead times — the actual delivery window, or rather closer to the real delivery window, is usually one to two weeks longer than what the quote states. The quote covers the production cycle. It doesn't cover freight, customs, and receiving. If I remember right, the last time we ran this analysis the average gap was 9 days. But don't quote me on the exact figure.
The mistakes I see most often
- Comparing branded fixtures to "similar-style" OEM on unit price. If you're buying a BEGA light fixture, you're buying a BEGA light fixture. Converting it into an "OEM equivalent" quote and comparing the two numbers puts two different products into one spreadsheet. The comparison isn't cheaper — it's misaligned with what the project asked for.
- Assuming freight is baked into the unit price. Commercial fixtures are heavy and bulky by design. Freight, especially interstate or import, can add a meaningful share to total landed cost. Ask for it as a separate line every time.
- Accepting "full fixture warranty" as a phrase. Ask which components are covered, whether it's repair or replacement, who covers labour, and who covers return freight during the warranty period.
- Treating the quoted lead time as the arrival date. Quoted lead time usually covers production. It does not cover freight, customs, or receiving inspection.
- Overlooking trim and mounting hardware. Recessed downlights are especially prone to this. The fixture itself is cheap; the ceiling cut-out dimension, mounting clips, and trim adapters, if not locked at the start, will generate rework that costs more than the fixture price difference.
- Counting a discount as a win. If you push unit price down 5% but drop a driver grade or cut the warranty from five years to three, the total cost is higher. The discount is on the invoice. The loss is in two years.
None of these seven steps is complicated. The hard part is running them in the same order on every order, every time. Our cost sheet has been through a handful of revisions over six years. If there's one takeaway, it's this: don't trust a quote that hasn't been broken into eight lines.
