From the FAQs:
http://www.auctionsniper.com/faqbasics.aspx#faq_15a_lblIt seems to me, that the following text from the above FAQ is either misleading and could cause someone, or anyone, to think they wouldn’t be charged, OR grape has found a bug:
If you placed a bid on eBay for $10.00, then you sniped with us for $10.00, the user would get a "HIGH BIDDER" status message. But if you place a bid on eBay for $10.00, then snipe for $15.00, then you will be charged a snipe credit and the status will be "YOU WON!"On the other hand, I don’t see any advantage in placing a manual bid AND an equal or lower snipe bid, as ebay would ALWAYS reject it. Once you bid, you can only INCREASE your bid. I must be missing something.
Maybe grape didn’t actually WIN the auction?