Hi and Welcome to the forum
Costs of snipes are :
* Auction won that ended at $25.00 or less = $0.25
* Auction won that ended between $25.01 and $499.99 = 1% of final price
*Auction won that ended at $500.00 or more = $5.00
It doesnt really matter if someone else has a 5 seconds lead time and is bidding on the same item as it is always the HIGHEST bidder that wins - not the last bid. If they happen to bid the same amount at the same time (unlikely but happens), the bid that was placed first wins. That is why we all recommend that you set a odd amount ie, $ 21.47 instead of $20.
I am sure your password will be safe with AS (Auction Sniper) as there are people that have been here for several years without any hassle.
Hope to see you around some more
Lexie