1. I say long live the snipers, for without them I would likely be living in a house of cardboard eating EBTs for breakfast.
2. No one has mentioned the "double snipe".
Suppose there is a $10000 card that two bidders feel they absolutely positively have to have in their grimy little hands.
Both bidders place snipes well above the $10000 value to "insure" that they will prevail.
Bidder A snipes at $25000 and Bidder B snipes at $30000.
Bidder B wins the card for $26000.
He better not be looking to sell it in the near future.
I'll bet that "Sniper's Remorse" isn't all that uncommon, but seldom confessed.
For these two reasons I refrain from using sniping services.
"In the world of baseball card auctions, if you lose an auction, you break even.
In your favorite casino, if you lose, you are in the red."
And in example #2 above, if you win, you lose.