The vats- you have to pay before you clone, then if the corpse gets rejected, you can't get your money back. I wouldn't have said anything about it except there's no IC reason why not. The corp doesn't make more money off of you cause the next guy who uses it just gets the credit.
oh yeah and if you "pay" the money instead of "slot" it then it disappears.
I was thinking it would be a good idea if you could pay way ahead for an apartment, then get a refund if you decide to move, that's a little bit different though.