Well, you're out of luck here.
But over at Play at the Plate, he is holding a 2010 Topps contest. They recently bought 30 packs of Topps and produced 66% of the set. They then added 25 more packs and want us to guess what % of the set they will have done when adding those 25 packs to the other 30 packs.
Math, I know, but still. There should be a pretty good prize, worthy of your little bit of time.