Free/Cheap Snowboard Bindings?

I'm working on the summer ski project that was posted here a while ago. We are prototyping now, and we want to use something similar to a snowboard binding in our design. I know it is a long shot, but there are some boarders on here, and I was wondering if anyone has any old snowboard bindings they would be willing to donate or sell for very cheap. Any brand, any cosmetic condition (as long at they function), would prefer the non step in type (not sure if these are even around anymore, had them on a rental board once). If anyone can help us out, we would really appreciate it.