If you don't want to be sniped, make your first/only bid the max you are willing to spend, and remove yourself from the emotion and trauma of the auction experience. Then, if you get sniped at the last second, you will be outbid by an amount you never wanted to pay anyways.
TJR, you are forgetting one important point. When you get sniped at the last second, the loser only sees it at being outbid by a buck or two. You do not know for a fact that that the sniper bid only 5 bucks more, or if he actually bid $30.00 more.
Your bid, no matter how much the bid is, will only increase the bid to the next level, not total price.
I think many of those that get sniped at the last minute think the sniper only bid 5 bucks more and won.
I have been known to snipe with really off numbers. I actually got a guy by 1 penny. I sniped the auction at 2 seconds. I bid $101.01. His max bid was $101.00. Since my blind bid was 1 penny more than his, I won.
I actually got an email from him asking if I knew how much he bid before I bid. He was impressed and congratulated me on beating him.
Tom