I use EZ sniper. They give you three for free and then you need to bank $10 with them for the service fees. You only pay a fee if you win the item. I have used them for about six months and have never had a problem.
Here is their web address:
EZ sniper : Free ebay auction sniper software. Snipe auctions online. Automatic esnipe bid sniping agent.I really like this servic because I try to snipe a lot but loose out on a lot as I don't bid top dollar. Since they don't charge unless I win this is good for me. The other program I used before charged a monthly fee for the service win or lose.
Thanks,
John Proctor