I currently have a full 10sp 105 groupset and two sets of 10sp road wheels in my basement that are in used-but-good condition.
I debated trying to sell the parts on ebay, but I'm not sure it's worth the hassle, so I'm planning to donate them to a local co-op next week. Hopefully they can find a use for this stuff. I've donated complete bikes in the past but never just parts.