Interesting point about BaT's less than 50% acceptance rate. Has anyone posted any tips on getting a car accepted by BaT? Based on my own observations, I would say lots of good quality pictures, including underside of car and any flaws, plus videos of car being driven and a walk around. Some listers include pictures of receipts and other documentation. I'm sure there are more...
Lots of good photos is a must. I don't remember the exact figure that Randy Nonnenberg (co-founder of BaT) quoted in a podcast I saw with him discussing BaT, but the average number of photos was a big number; 120 or 180 or something like that, and he wasn't talking about the recond number, but the average number. Some people, and especially dealers, average even more. It's not unusual to find listings with over 200 photos.
Showing the flaws right from the start, will save you some grief. There is a large and vocal "peanut gallery" that surfs BaT constantly. They are unmerciful. Never mind that many of them have never bought a car there, and many have never even made a bid. They make it their life's work to "throw shade" on other people's attempts to auction a car, often dredging up any criticism they can muster, posing loaded questions, demanding more photos of this and that, and videos of this and that, etc. Harming commerce is just some people's hobby.
One of my favorites is the guy who often posts a simple one-word question, "Tonneau?" as if the presence or absence of a tonneau cover is a deal-breaker. He also makes it a habit of asking if the ignition key also fits the boot lock. Another deal-breaker to him, I guess! I supose those are just the best things he can think of to try to embarrass a seller.
So BaT is a bit of a minefield, and you'd better put on your thick skin before you wade in, and bear in mind you are being baited with some people just hoping they can get you to respond with anger or sarcasm, which will only end up hurting you.
All of that said, they often get very good prices on BaT, but the car had better be legit, honestly and completely represented, and the seller had better respond to questions quickly and factually. I sold an early Rx-7 on BaT for what must have been about a record price at the time, and as annoying as it is when one of the peanut gallery tries to put you on the spot by asking for a cold-start video - when they themself have never cast a bid in their life - it's best to go make a cold-start video to post and thank them for their question.