[herr_oberst]

Read a few of the auctions that are similar to the cars you are selling - be sure to read all the comments. This is important. Comments make and break these auctions. You don't have to dig too deep to see which auctions are successful and where others that fell short could have been improved.

Get the cars detailed, then get 'em photographed - if you can't do it, it might pay to hire a pro or even a semi pro; write down the specifics of the car (BaT will wordsmith them after they receive your writeup) and be prepared to answer all of the questions that the commenters ask you. It seems like the worst sin as a presenter on BaT is to not participate in the auction. The corollary is, even if the car is rough, as long as the seller is honest about the flaws, the peanut gallery and the bidders will generally be on your side and you'll get a good hammer price.

Also, check to see if there is anyone in your area that brokers cars to BaT for a fee. Might be very well worth it to you and your friend.

(Be prepared to give that RV away for free. Does it have a Mopar or a chevy big block in it? Someone who frequents craigslist will happily haul it away.)