AppleHammer: get in touch with Stacho100, I'm sure he will be interested in fixing you Blizzards or meaby buying them of you.
I've already had a chat with him about potentially upgrading the cards. My hope is that the upgrade would also fix the card at the same time. Of course, it's a bit of a gamble because I could end up paying him for the mod and still having a faulty board. I've decided that I'm going to have a proper look at it first, but I'm too busy with Uni work at the moment so it's going to have to wait a little while. Hopefully I can get them both working, or at least make one good one out of two!!!
Good luck with your auction.
Apple Hammer