I keep seeing a number of adds that are on Ebay also, the latest a giant 300. How does one bid on it if both bids are considered a contract?

Hmm, thats a good question. I know EBay is an auction, here you can post a classified. So he just picks the one who pays him the highest I guess.

yea but here it's a auction to.

he should not. it is against ebay rules. violates their agreement.