Just came across this and thought I'd share. Apparently those bad boys are now going for ~£100 each as collectibles. I knew this will happen eventually 
-snip-
Wow, the prices are really amazing. Didn't think that so much money would be asked for these old usb block erupters. But it reminds me of the good old days. I still have 10 of these miners that I bought here in the forum back then. For me these block erupters are a nice memory and I will never sell them. -snip-