I've considered financing a pair of boobs or four in my day...
Only way I could see it working out, for the guy to assure he got what he agreed to, would be if the guy made a down payment, the lady got a loan in HER name for the surgery and the guy made the payments.
That way, if she stops keeping up with her end of the bargain, you could quit paying and it's on her.
Otherwise, what's to keep the lady from saying "I got my boobs, thanks and see ya!"??
It's the same as they couldn't trust us to get the free fucking out of the way and then pay cash for the boobs afterwards.
Paying for boobs and agreeing to a long term service deal turns it into a relationship of sorts.
Relationships are quirky and you never know what will happen a year or two from now, trust and honesty have nothing to do with it.
How many of you trusted someone and just KNEW they were honest and loyal...but are divorced from them now?