It sounds like you guys have gotten tangled up on the fine print. You want to use an escrow agent, and he doesn't want to do that. Why? Who knows.
I think that you need to just walk away from this. The more you communicate with this yo-yo, the more he'll think he's making a mistake by settling for (possibly) a low price.
There are a bunch of .info names coming available... just grab the same thing but in that form and wait this guy out.
In the end though, there are a TON of domains out there that
sound similar
could be used to sell same service/product
and in the end, its your marketing and quality service that
gives a website/domain its potency.
If you don't mind my asking... what i the general category in which your domain has to fit (don't tip your hand -- just tell me what the general service/product category is).
Robert
P.S. don't overlook those country code TLDs:
