Mistake 1: Choosing the Lowest Quote Without Context

The lowest quote is only meaningful with context: the same specification, scope, and quality assumptions. A low quote often hides a different stack, excluded testing, or a supplier without the capability the program needs. Compare quotes on identical written specifications with itemized inclusions, and weigh capability and risk alongside price. The pricing guide explains how to make quotes comparable; the mistake is comparing numbers without the context behind them.

Mistake 2: Skipping the Factory Audit

Documents describe what a supplier claims; an audit shows what the factory actually runs. Skipping the audit for a low-cost or distant supplier transfers the risk of process failure into the program. Even a focused audit—line, equipment, records, and samples—catches the gaps that paperwork hides. The audit guide provides the checklist; the mistake is treating it as optional for small or cheap orders.

Mistake 3: Leaving MOQ and NRE Unclear

MOQ and NRE are the two numbers that structure a custom program’s cost, and both must be written for the exact specification. Leaving them verbal or approximate produces surprises at order time: a different MOQ after drawings change, or NRE scope that excludes the work actually needed. Put the MOQ, NRE scope, and their conditions in writing before tooling. The MOQ and NRE guides cover the mechanics; the mistake is negotiating them separately from the specification.

Mistake 4: Ignoring Tooling Ownership and Payment Terms

Tooling ownership decides what happens to your molds and fixtures if the program ends or the supplier changes. Ignoring ownership and payment terms leaves the buyer paying for tooling they cannot move. Contract points—ownership, revision coverage, payment milestones, and exit terms—belong in the agreement before payment. The sample and tooling decision guide covers the contract structure; the mistake is treating tooling as a purchase order line rather than a negotiated asset.

Mistake 5: Overlooking Incoterms and Shipping Risk

Incoterms define where risk and cost transfer in shipping. Overlooking them leaves the buyer responsible for damage they cannot claim against, or paying freight they assumed was included. Define the Incoterm, the freight responsibility, and the damage-claim process before the order ships, and inspect on arrival per the agreed procedure. The packaging and shipping guide covers the logistics; the mistake is assuming shipping terms are standard.

Mistake 6: Failing to Verify the Supplier

Verification is the difference between a supplier and a claim: factory identity, certificates with scope, references, and quality records. Failing to verify turns a promising quote into a gamble. Run the verification checklist—registration, certificates, references, and sample evidence—before committing production. The factory-finding and certification guides provide the tools; the mistake is skipping them because the price looks right.

Mistake 7: Missing Change Notification and EOL Plans

Displays change: suppliers change components, processes, or discontinue panels. Without change notification and end-of-life terms, the buyer discovers the change when the product fails or the panel disappears. Put PCN notice, qualification requirements, and EOL transition terms in the agreement, and plan for the possibility that a qualified panel becomes unavailable. Change and traceability practice has its own guide; the mistake is assuming the supply will stay frozen.