I'll sell you one for 50 bucks and shipping. It's pretty much brand new. I put some carpet tape on the bottom to help grip your shoulder, it works great, the next best thing from gluing it to your shoulder!
I made sure not to cover the hydro date (or whatever it is), i've included a picture of the back.
Pictures!
http://img237.imageshack.us/img237/9629/1000619fu9.jpg
http://img410.imageshack.us/img410/1230/1000624zn1.jpg
EDIT: Depending on the outcome of an ebay auction, this may or may not be for sale.