A bad print vendor for business cards costs you a reprint. A bad vendor for packaging costs you a warehouse full of boxes that don't fit your product, arrive three weeks late for a launch, or use board that fails the moment it's stacked. Packaging orders run in the hundreds or thousands of units, get produced against a physical proof (or, with the wrong vendor, without one), and are usually locked in well before you find out whether the supplier actually delivers what they promised. Vetting matters more here than almost anywhere else you spend a print budget, and most of it comes down to asking the right questions before you sign, not after the pallet shows up.
None of the questions below require special industry knowledge to ask. They just require actually asking them, in writing, before a deposit changes hands, and paying attention to how directly a supplier answers, which tends to be a better predictor of the relationship than anything in their sales pitch.
Why Packaging Vetting Is Different From Vetting Any Other Print Job
A flyer or a business card is cheap to reprint and fast to reorder if something's off. A packaging run isn't. It's tooling, die-lines, material minimums, and a production schedule that's often tied to a product launch date you can't move. That combination of higher stakes and longer lead times is exactly why a supplier's process matters as much as their price. A vendor who's vague about proofing, quantities or timelines on the sales call will be exactly as vague once your deposit has cleared.
Ask About the Proofing Process
A digital mockup is not a proof. It's a rendering, and rendered colors, especially metallics and dark inks, routinely look nothing like the printed result. Ask specifically whether the supplier provides a physical, printed proof on the actual substrate before a full production run, and whether that proof is free or billed separately. A supplier who pushes you straight from digital file to full production, especially on a first order, is asking you to trust their color management sight unseen. For a run of any real size, insist on seeing and approving a physical sample first. It's the single highest-impact question in this entire list, because it's the one that catches material, color and structural problems before they're multiplied by a thousand units.
Understand Minimum Order Quantities Before You Fall in Love With a Design
Minimum order quantities vary enormously by structure and finish. A simple folding carton might have a low minimum, while a rigid box with foil stamping and a custom insert can require thousands of units to justify the tooling cost. Get the actual minimum in writing before you invest time in a design that assumes a smaller run, and ask directly whether that minimum is negotiable for a first order or a repeat customer. A vendor who won't quote a firm minimum until after you've submitted artwork is usually setting up to upsell you once you're already invested in the design work.
Push for Material Sourcing Transparency
If a claim about recycled content, FSC certification or food-safe stock matters to your brand, ask where the board actually comes from and whether the supplier can document it. Not just repeat the claim back to you. A legitimate supplier can name their mill or converter, describe the certification, and usually show it on a spec sheet or previous production run. A vague answer ("it's all eco-friendly") on a specific sourcing question is a sign the claim is marketing language rather than something the supplier can actually back up if a customer or auditor asks.
Get a Real Turnaround Commitment, Not a Range
"Two to four weeks" is not a production commitment. It's a hedge. Ask what happens if the order runs long: is there a guaranteed ship date in writing, and what does the supplier do if they miss it? Reliable vendors give a specific date tied to proof approval, because their own production schedule is predictable enough to commit to one. A supplier who won't commit to a date, or who blames every delay on factors outside their control after the fact, is telling you in advance how the relationship is going to go under real pressure. Namely, a launch date you can't move.
Ask What Happens if the First Run Isn't Right
Even with a good proof and a clear spec, a full production run can still come back slightly off. A color that shifted, a fold that doesn't sit quite right, a die-line that needs a small adjustment. What separates a good supplier from a mediocre one isn't whether this ever happens; it's what their policy is when it does. Ask directly, before ordering: if the delivered order doesn't match the approved proof, what's the remedy. A reprint at no cost, a partial refund, or a negotiation on a case-by-case basis? A supplier with a clear, standing answer to this question has clearly dealt with it before and built a process around it. A supplier who seems surprised by the question, or who implies it's never happened, hasn't necessarily had a cleaner track record. They may just not have a policy for when it does.
Start Small Before You Commit to the Full Volume
For a new supplier relationship, it's worth asking whether a smaller trial order is available before committing to the full bulk quantity a project ultimately needs. A trial run costs more per unit than the full order will, but it tests the entire pipeline. Proofing accuracy, material quality, communication, and actual delivery timing. Against a much smaller financial exposure than a first order at full volume. Suppliers confident in their process are usually receptive to this; it's a small revenue trade-off for them in exchange for a customer relationship that could run for years. A supplier who insists on full volume with no smaller option, particularly for a first-time customer, is asking for a large commitment without giving you any low-risk way to verify they can deliver on it.
Red Flags Worth Walking Away From
None of these questions are unreasonable to ask a supplier who's confident in their own process. A good vendor answers all of them without hesitation, because proofing, pricing, sourcing and turnaround are exactly the things they'd want a customer to understand before a large order goes into production. The suppliers worth avoiding are the ones who treat those same questions as an inconvenience. If you're vetting us against this list, the fastest way to get a straight answer on any of it is to request a quote and ask directly.
