You're better off without this guy; that is shoddy behavior. I can't help you with a local address (although after LA Florida is surely the spiritual home of the male hairpiece, so there must be many), but there are several good on-line places, such as Toplace, NorthWest Lace, Coolpiece etc. where the price for a good quality lace piece is around the $250 mark. You should send in some hair samples from a few different places on your head, rather than relying on a color name.
The cost of a cut in seems to vary widely, but $350 is ludicrous by any standards. I would say $75 is reasonable and $150 is very expensive but not unheard-of. I pay about 85.