Have you tried a 'Bid Group'?
Using bid groups, there is no need to do one auction at a time. Just enter many many auctions into your bid group (there is over 400 on eBay) and tell AS you want to win one. AS will bid on each auction till you win, and then cancel all remaining snipes automatically! Works great for things like this.
>Click Here< for the 'Bid Group' tutorial.
Just be sure all those auctions are entered into your bid group, and not 'My Snipes' or another 'regular' folder.