Not true. As a seller, you can end an auction at any time, provided you sell it to the high bidder.

Ie. You bought a razor for $10 and would like to get $30 on ebay. you list it and by the third day, the bids are up to $30. You can choose to end the auction and sell to that high bidder, regardless of the amount of time left in the auction. Check the rules. It's all legit. Not a bad idea to foil sniping, but the seller must be a man above men, as I don't know anyone who can't use a bit of "extra" cash.