http://www.auctionsniper.com/faqsnipes.aspx#faq_1a_lblquote:Out of curiosity what is the latest I can place a bid with AS?
You will be billed if your AS snipe didn't win but your manual bid did: http://www.auctionsniper.com/faqbasics.aspx#faq_15a_lblquote:mentally I thought I placed my bid and it was locked, but there really wasn't anything stopping me from biding.