Every auction software vendor has “AI-powered” on the homepage. Half of them are lying. And most buyer’s guides you’ll find were written by one of the vendors, which is a little like having the fox write the henhouse security guide.
So here’s a vendor-written guide that tries to be honest about it — including where we lose. If you’re shopping in 2026, these are the six things worth checking before you put a card down. For each one, the theme is the same: ask for the receipts. A demo tenant, a sample export, a published price. Anything a vendor won’t show you on a screen share is a thing they’re hoping you won’t ask about again.
1. Is the AI cataloging real — and does a human still approve every lot?
“AI cataloging” covers a wide range, from genuinely useful to a wrapper around generic OCR. The useful version looks at your lot photos and drafts a title, description, category, condition note, and a value range — and it tells you how confident it is on each field, so you know where to look hard. That saves the real cost of a 200-lot sale, which is the typing.
Two things to check. First, ask to watch it draft a lot live, from photos you brought, not a canned demo. A vision model will confidently call a Pyrex bowl “Fire-King” if the shape is close, or assign a Weller vase to Roseville on palette alone. You want to see how it handles something it doesn’t know.
Second, and this is the one that matters most: run from any vendor that tells you the AI “runs the sale” or hands you a “finished catalog.” That’s not a feature, it’s a liability. The honest shape is: AI drafts, ideally a second pass reviews, and you approve every lot before it goes live. Capture saves you the typing. It does not save you the deciding. Any vendor promising otherwise either doesn’t understand your job or is hoping you won’t notice when the model invents a maker’s mark.
2. Do you own your bidder list?
This is the quiet one, and it’s the one that costs the most over ten years. There are two very different business models wearing the same “auction platform” label.
A bidder marketplace (HiBid and Proxibid are the big ones) brings the audience. That’s their real product, and it’s a genuinely valuable one — a pool of registered bidders far larger than any you’d reach on your own. But the bidders register with them. The relationship, and the list, largely lives on their side of the fence.
A platform tool runs your catalog and your sale under your brand, and the bidder list is yours to keep and export. That’s a different value proposition — it doesn’t come with a built-in audience.
Neither is wrong. Plenty of good operators run both: a marketplace for reach, a platform tool for the workflow and the ownership. What you want to avoid is not knowing which one you bought. Ask directly: “If I leave in two years, do I walk out with my bidder list in a file I can use?” If the answer has more than one clause in it, you have your answer.
3. Is the pricing published — and is it a flat number or a cut of your sale?
Here’s a tell that costs nothing to check: go to the vendor’s pricing page. If the number is right there, that’s a vendor confident enough to compete on it. If the page says “call us” or “request a quote,” that’s usually a vendor who wants to size up your revenue before naming a price. Across the legacy platforms, “call for quote” is common. Draw your own conclusions.
The bigger question is the shape of the price, not the size. There are two models:
- A percentage of hammer gross, plus per-lot listing fees. This is the marketplace model — HiBid’s take runs roughly 5–8% of hammer plus per-lot fees, negotiated by tier. The trap here is that the bill scales with your success. Have a great sale, write a bigger check. At real cadence — say 50 lots a week — that’s thousands of dollars a month, and it grows exactly as you do.
- A flat subscription. You pay the same whether the sale does $20K or $80K. Predictable, and it doesn’t punish a good day.
Again — the percentage model buys you audience, so it’s not simply “bad.” But run the math on your volume before you sign, and make sure you know exactly which per-lot and per-listing add-ons stack on top. The surprise fees are almost never on the pricing page.
4. Does it actually fit your vertical?
A lot of catalog software was built for general retail and then stretched to cover auctions. It works fine until you sell something with its own fields. Firearms need make, model, caliber, action, serial, and an FFL note. Coins need year, mint mark, grade, and denomination. Vehicles and equipment need a VIN or serial you’d rather decode than retype. A general “category” dropdown doesn’t hold any of that cleanly.
If you run one vertical, ask to see its specific field schema. If you run a mixed book — estate one weekend, farm equipment the next, a firearms consignment after that — ask how the tool switches between them without you rebuilding your fields each time. And a related check worth its weight: does it lean on free public databases to fill in the boring facts? Decoding a VIN against NHTSA, or an ISBN against a book database, saves more typing per sale than any language model does. That’s connective plumbing, not fashionable AI — but it’s the part that quietly saves your evenings.
5. Can you get your data back out?
You will leave a vendor someday. Maybe in ten years, maybe next spring. The question is whether you leave with your data or leave it behind.
Ask for a sample export before you sign — an actual CSV or JSON file, not a promise. Then check what’s in it. Catalog and lot data usually export cleanly. Your bidder list depends entirely on the vendor (see #2). And be warned: historical bid data often does not migrate at all — it’s frequently locked inside the vendor’s database, and most tools will not hand it over. Some auctioneers care about that; most don’t. But you should know it going in, not discover it on the way out.
One more portability check that’s easy to miss: your payment processor and your domain. If your bidder pages live on your own domain and your Stripe account is yours, switching platforms is a DNS change and a data import. If they’re locked to the vendor, leaving means re-onboarding your bidders and your banking from scratch. That friction is the point — it’s what keeps you from leaving.
6. Is the vendor honest?
This is the soft one, and it’s the one that predicts the rest. In this business a broken promise never gets forgiven, so pay attention to how a vendor talks before you’re a customer, because that’s the most polished they will ever be.
Signs of an honest vendor:
- They tell you what the tool doesn’t do. Real AI has hard limits — it can’t reliably judge authenticity or grade on high-value coins, jewelry, or art from three photos, and it can’t price a thin vertical with no comps. A vendor who says so is a vendor you can trust on the things it can do. A vendor who claims the AI does everything is telling you they either don’t know the limits or are hoping you don’t.
- They show you comps behind an estimate, not just a number. A model asked “what’s this Rolleiflex worth” will invent a figure. A model that finds recent completed sales and anchors on the median is doing real work. If a value estimate has no citations under it, you’re being asked to trust the model’s memory of the internet. Don’t. And when there’s nothing to anchor on, the honest move is to say so — no estimate, opening bid $X — not to guess.
- They don’t trash their competitors. A vendor who tells you HiBid is “dying” or the legacy platforms are “for dinosaurs” is a vendor who’ll be careless with the truth about their own product too. The honest ones will tell you where a competitor genuinely beats them.
- They avoid absolutes they can’t back up. “Nobody else does this” is almost always false and easy to disprove. “We haven’t found a competitor who does this” is a claim from someone who actually looked.
The one-line version
Whatever you’re shown, ask for the receipts. A live draft from your own photos. A sample export file. A price on a public page. The name of one thing the tool can’t do and one thing a competitor does better. A vendor who can answer all four on a screen share is a vendor worth a second call. A vendor who dodges even one has told you something.
Full disclosure — we build one of these tools. Hammerwerks is the platform kind, not the marketplace kind: we don’t have HiBid’s audience, and we say so. What we do is photo-to-draft cataloging where a second AI reviews the draft and you approve every lot, per-vertical fields, comps shown behind an estimate (and no fantasy number when there’s nothing to anchor on), published flat pricing with no hammer percentage, and a bidder list that stays yours. If you want to hold it up against this checklist yourself, watch the 90-second demo or book a call and bring hard questions.