Sniping destroys the auction system.  Allowing sniping in the last few seconds simply gives the fastest sniping software an unfair advantage. It also disadvantages manual bidders and the sellers who could have gained a better price.

Ebay should change the rules, or at least give sellers more choices in how their auction should be conducted. 

The best way to make auctions fair again is to extend the auction deadline by say five minutes each time a bid is placed within five minutes of the end time.  In this way, manual bidders can remain in the contest. Sellers should be able to see bidding remain live until they have received the best price from all bidders in an open contest.