5–12%
Extra you pay for a fixed price
Like paying for insurance — the supplier charges a markup to take the risk for you
3%
Profit margin you can lose by picking the wrong structure
That's $300K on a $10M spend — gone
484%
How much one aluminum cost layer swung in 3 years
Regional delivery fees alone went from 19¢ to $1.11 per pound (2020–2023)
Option 1
Fixed price = Fixed-rate mortgage. One all-in price, no surprises. You know exactly what you'll pay every month. But you're paying extra (5–12%) for that peace of mind — the supplier charges a safety margin.
Best for: short contracts (≤12 months), stable needs, tight budgets
Option 2
Flexible price = Buying gas at the pump. Your price changes each time the market moves. When prices drop, you win. When they spike, you feel it. No safety markup — but you carry the risk.
Best for: long contracts, high material cost, liquid markets
Option 3
Hybrid = Phone plan with fixed base + pay-as-you-go overflow. Lock part of your volume at a fixed price, let the rest float. Or fix the manufacturing cost but let the raw material move. Best of both worlds.
Best for: most industrial buyers — the sweet spot
01. How big is the spend?
Large, high-volume purchases hurt more when prices move. The bigger the spend, the more flexible pricing makes sense — you don't want to lock in a bad price on millions of dollars.
02. How fixed is your budget?
Tight budgets need predictable prices. If your department can't handle surprise cost swings, fixed pricing gives you certainty — even at a premium. Think: you're buying calm.
03. Are prices stable or wild?
Calm markets? Fixed is fine. Wild swings? Float it. When prices bounce 20%+ in a year, suppliers refuse to fix long-term — or charge a fortune. Like trying to insure a house in a hurricane zone.
04. How long is the contract?
Under 12 months: fixed works. Multi-year: mix it up. Nobody can predict raw material prices 3 years out. Locking in a multi-year fixed price without a safety valve is the #1 mistake buyers make.
05. Is there a trusted price benchmark?
Copper and aluminum have daily public prices. Steel is trickier — its prices are less transparent. Only float against an index you can look up and verify yourself.
06. How much of the cost is raw material?
Under 30% of the unit cost? Fixed is simpler. Over 50%? Split it. If metal is most of the cost, fix the labor/fabrication part and float the metal part — you get the best of both.
07. Do your customer contracts match?
If your customers pay a flexible price, your suppliers should too. If your sales prices are fixed but your buy prices float, you're squeezed in the middle. Match both sides for a natural safety net.
Score each question: Low / Medium / High. No single question decides — the pattern across all 7 points the way.
Danger
Signing a multi-year fixed-price contract with no escape hatch. Picture locking in a gas price for 3 years. In 2020–2022, steel prices jumped over 11% per year. Companies with locked-in fixed contracts got crushed — they either lost millions on every order, begged the supplier to renegotiate at the worst possible moment, or watched the supplier go bankrupt and stop shipping. The fix is simple: add an annual price review clause. If you must go fixed for multiple years, agree upfront that the price adjusts once a year based on an agreed index. Both sides know the rules before signing.
Cu
Copper: the easiest to float. Copper has the most transparent daily price in the world (like a stock price you check online). Floating your copper price against the LME or COMEX index is standard. Fixing copper for 3 years means paying a middleman for something the public market does cheaper.
Al
Aluminum: split it into 3 pieces. Aluminum has three cost layers: (1) the global metal price, (2) a regional delivery/surcharge fee, and (3) the cost to turn it into your part. The biggest mistake is bundling these together. The regional fee alone swung 484% in 3 years. Track and price each layer separately.
Fe
Steel: the most complicated. Steel prices are less transparent than copper or aluminum. Local supply, trade rules, and mill wait times matter. Mills prefer fixed pricing — if you push for full flexibility, you may lose guaranteed supply when demand is high. A hybrid approach (fix some, float some) works best here.
01
Talk to Finance before you sign. The most expensive mistake is when procurement fixes the price and treasury separately buys insurance against the same risk — paying twice for the same protection. One conversation saves millions.
02
Match buy-side to sell-side. If your customers' invoices have a metal surcharge based on the LME index, use the exact same index on your supplier contracts. It creates a natural balance — when one side goes up, the other does too.
03
Check the math every time. If your contract says the price adjusts quarterly based on an index, don't trust the supplier's calculation. Verify it yourself. One real company caught a $27,500 error on a single adjustment — just by checking.
🔒
Pick Fixed Price when... Your contract is under a year, your budget can't handle surprises, the market is calm, and the material is less than 30% of total cost. Like paying extra for a fixed-rate mortgage because you value knowing exactly what you'll pay each month.
📈
Pick Flexible (Index-Linked) when... Your contract runs multiple years, the raw material is over 50% of the cost, there's a public daily price you can check, and your finance team understands how to manage the risk. Like buying gas — the price changes with the market, but you're not paying someone a markup to guess wrong.
⚖️
Pick a Hybrid when... You want budget stability on your must-have volume but want to benefit if market prices drop on the rest. Or you want to fix the manufacturing/labor cost but let the raw material price float. Like a phone plan with a fixed monthly base and pay-as-you-go for anything beyond it. Most industrial buyers belong here.
Jargon Decoder
Index-Linked Tying your price to a published number — like the LME metal price. Your cost goes up or down automatically when that number changes.
Risk Premium The extra money a supplier charges to take the price risk for you — like an insurance premium. Typically 5–12% on top of the expected price.
LME / COMEX The London Metal Exchange and Chicago Mercantile Exchange — like a stock market for metals. These publish the daily prices most contracts reference.
Economic Price Adjustment (EPA) A clause that says "the price can change once a year based on the index." The safety valve that prevents multi-year fixed contracts from blowing up.
Regional Premium The extra delivery/surcharge fee added to the global metal price for your location — this fee alone changed 484% in aluminum between 2020 and 2023.
Natural Hedge Matching your buy prices to your sell prices so they move together. If both reference the same index, you're protected without buying separate insurance.
Sources: GEP, London Metal Exchange, Platts/CRU/Fastmarkets, Umbrex, Ripple Treasury, LightSource — accessed July 2026
Rzzro
Procurement, quantified.
