I have two used playstation DDR Dance pads for sale. They are used, so there are wear and tear, but they are still usable. One of them has slight connectivity problems, but it's fixable with some wire soldering.
The pads are Red Octane, hard, high quality pads that originally sold for over $100 each.

Anyway, because they're old and has some issues, and because I can't bring them with me over the summer, I'll offer them both for $15 obo.

(see ebay post for used price range http://cgi.ebay.com/RED-OCTANE-DDR-DANCE-DANCE-REVOLUTION-PAD-+--GAMES-PS2_W0QQitemZ120423731872QQcmdZViewItem)