People use auto bidder sites all the time steve.
I have used auctionstealer for years.
Put in a bid, it throws it in the last 10 seconds for free, or 2 bucks for priority 2 second service.
Its paid for itself every time.
If he bid, then he owes you the money.
What I do with people like this is send them an invoice every day until they pay. I had to send this dickhead in france an invoice every day for like 7 days, until he paid the 80 bucks to ship a set of speakers to france.