i find that interesting, because we rented from Advance...
basicly, they way their system works, is you "pay" for the set as if purchasing.. but if you bring it back in XX number of days, you get your money back - or most of it anyway.
that way, if it does not come back, they are not out anything.
We checked All the vehicles when we rented.. found the problem with his car (bad hose - had a small split) and found the cap on mine was shot