For what it's worth, I always bid-snipe*. No bots, I do it by hand.

Sometimes I miss my window. I guess there's nothing I really need all that much, though. I just don't see the point in engaging in a bidding war. Might be better for the seller, but not for my pocketbook.

"Don't hate me because I'm tricky",
-brendan

*well, technically, I "buy-it-now" a lot when I really want it.