Not really...I meant that someone who already has the set can recoup some of their expenses, and they very likely aren't using it at the moment. Whoever wants to "rent" the set gets to whenever the owner wants to lend it out, and then it goes back to the original owner in the end.
Seems like a decent idea to me, assuming that all parties involved play nice.

You could use heatware/HTF referrals as a decision-maker, as to whether or not the guy/girl is trustworthy.