how can a seller buy their own item in an auction

[sunripe]

how can you compete with the seller when they outbid you and buy it at the end of auction with no reserve

[theafkgamer]

A seller can not bid on their own auction.

If you mean that you think the seller is using another account to raise the bid, that is not allowed. If you believe shill bidding is occuring, you can report the listing to ebay.

[heidilynn0_3]

 A shiller doesn't want to win the item ,  just drive up the price.