Look around for different places? Or get your own IPL handheld machine that they sell? Dunno how safe those are though.
I know in the UK it's really expensive it's about double here... I quoted just for underarms back in Canada. I know one session for full bikini is about 90 bucks. I don't know what else you want done.
My justification is if I have to get it waxed professionally somewhere.. it'd cost $10 just for underarms.. times that by every 2-3 weeks and you're thinking about 250 bucks a year. Why do that when I can have it permanently gone for a hundred or so more dollars?
If you shave though, and don't mind shaving, it's up to you.. because in the long run, razors are cheaper.
And.. "ever letting you have it done" is nonsense. You can always have it done eventually, even if you are old. The only downfall is that it wont work on white hair.