Bring a Trailer and Cars & Bids have charged buyers the same fee since February 2025: 5 percent of the winning bid, with a $250 minimum and a $7,500 cap. That settles the buyer’s premium argument. If you’re bidding on a classic, exotic or collector car in 2027, the choice now comes down to which cars each site attracts and what sellers pay to list there. Live auction houses work on different terms, and we cover those below.
That shift changes the math for anyone weighing a consignment or watching a car close out. Below, we cover which venue suits which car, how to bid without regret, and what live houses still do better. If you want the bigger picture first, start with reading the collector market.
The Fee Table: Online Car Auctions vs Live Houses
Here is how the three options line up. Treat it as a starting point. Online car auctions adjust their fee schedules from time to time, and the 2025 changes caught plenty of regular bidders off guard. Confirm current terms on each platform's own fee page before you register to bid or sign a consignment agreement.
| Platform | Buyer fee | Seller cost | Best for | Format |
|---|---|---|---|---|
| Bring a Trailer | 5%, $250 min, $7,500 cap on standard listings. 10% capped at $4,000 for motorcycles, parts, wheels, and some other categories | Classic $99, Plus $429, White Glove $2,500+ | Broad collector range, prewar to modern, plus motorcycles | Seven-day online auction, two-minute extension, public comments |
| Cars & Bids | 5%, $250 min, $7,500 cap (matched BaT on Feb. 25, 2025) | Free to list | Roughly 1980s-and-newer enthusiast cars, now some late 1970s | Timed online auction with public comments |
| Live houses (Mecum, Barrett-Jackson, RM Sotheby's, Gooding) | Buyer's premium varies by sale | Entry fees and commissions vary by sale | Marquee consignments and big-event cars | In-person auction with preview days |
On a standard car, bring a trailer fees and cars and bids fees now work identically for buyers. A $40,000 winning bid adds $2,000. Anything at or above $150,000 hits the $7,500 cap, and under $5,000 the $250 minimum applies. Before February 25, 2025, Cars & Bids charged 4.5 percent with a $4,500 cap, a real saving on expensive cars. That gap is gone. Watch the category exception on BaT, though: a $30,000 motorcycle carries a $3,000 buyer fee, not $1,500.
Which Platform Fits Which Car
Start with the build year. Doug DeMuro launched Cars & Bids in 2020 around 1980s-and-newer enthusiast cars, and it only recently opened the door to the late 1970s. An E30 M3, a Mk4 Supra, a manual Cayman, or a clean first-generation Viper lands in front of exactly the crowd that grew up with those posters. A 1965 Mustang or a prewar Packard simply isn't its audience.
Bring a Trailer casts the widest net: prewar, postwar, air-cooled, trucks, oddball imports, motorcycles, even parts. For anything older than the late 1970s, it's the default online venue, and its comment threads often include marque specialists who know chassis codes by heart.
Value and paperwork come next. A matching-numbers car with a thick binder and concours history may suit a catalog sale where specialist buyers travel to bid. A $25,000 driver with honest flaws often fits online, where a broad pool of bidders sees it for days. Whether you're after a driver or investment shapes the venue too. Shopping affordable? Most of our sports cars under $30K sit squarely in Cars & Bids territory, while many future classics show up on both sites.
Search completed sales for your exact model on both sites before choosing. If one platform has sold a dozen examples and the other has sold two, the audience has already told you where it lives.
Buying Smart at Collector Car Auctions
Online bidding feels easy right up until the invoice arrives. A few habits keep it that way.
- Read every comment. Sellers answer questions in public, and sharp-eyed commenters flag replaced panels, non-original engines, and VIN discrepancies. Silence on a direct question tells you something too.
- Put the fee inside your max bid. If your ceiling is $50,000 all-in on a standard listing, your real top bid is about $47,600, since the 5 percent fee adds roughly $2,380.
- Get an independent inspection. A specialist who knows the model usually costs far less than one surprise repair. Ask the seller in the comments whether the car is available for one.
- Budget shipping and tax. Transport, registration, and your state's sales or use tax land on top of the winning bid, and none of it appears in the auction total.
Those extras hit hardest at the low end, which is why collecting on a budget means planning the full landed cost, not just the bid.
Set your number before the final minutes. Bring a Trailer's two-minute extension resets the clock with every late bid, and that's exactly when people blow through their limits.
Selling a Collector Car: Photos, Records, and Reserve
Online buyers can't touch the car, so photos carry the listing. Shoot in even, overcast light and cover the underside, engine bay, wheel wells, and every flaw you know about. BaT's Plus and White Glove tiers add more hands-on help, while Cars & Bids lets you list free.
Records sell cars. Service invoices, window stickers, ownership chains, and restoration photos turn a maybe into a bid. Our guide to provenance and documentation covers what serious buyers actually look for.
A reserve price is the hidden minimum a seller will accept. If bidding on a reserve auction falls short of it, the car goes unsold. A no-reserve auction sells to the high bidder whatever the final number. On Bring a Trailer and Cars & Bids, that certainty pulls more bidders in early, and no-reserve cars often finish stronger because of it. The risk sits with the seller, since a slow week can mean selling under market. For buyers, no-reserve listings are where the deals are, and they’re also where bidding gets most competitive. Set your limit before the final two minutes.
Organize your records before you list. A GarageApp Virtual Garage entry with service history and photos lets you pull up whatever commenters ask for in minutes instead of digging through a shoebox.
The Case for Live Car Auctions
Live houses play a different game. Mecum, Barrett-Jackson, RM Sotheby's, and Gooding stage sales around big moments, like Scottsdale in January or Monterey Car Week in August, and the room itself is part of the product. Buyer's premiums and seller commissions vary by sale, so read that specific auction's terms rather than assuming last year's numbers.
For buyers, the preview walk is the main advantage. You can open doors, smell the interior, look underneath, and sometimes hear the car run before it crosses the block. No photo gallery replaces that. For sellers, a strong slot at a marquee event can reach buyers who rarely browse online.
The tradeoff is pace. A car sells in minutes, not days, and the energy of the room can push bids either direction. Many of these sales line up with the biggest car shows on the calendar, so it's easy to make a trip of it.
Talk to Owners Before You Bid or List
The best due diligence often comes from people who already own the car. On GarageApp, you can search for nearby owners by make, model, and trim, join marque owner groups, and message owners directly to ask what fails, what it costs to run, and what a good example looks like.
Sellers benefit too. Keeping service records and photos in your virtual garage means the documentation is ready when bidders start asking questions, whichever platform you choose.