Shasha's rate originally was $1500 in NYC, but in some other towns, Philly for example, it was $1000.  One reviewer mentioned that he met her and she complained about the low rate, so it's possible it's back up to $1500.  As far as the eros ad, they often use one ad from one city and just repost it to the new citie's eros guide, so it is possible that the rate posted was in error.

Exotica is a straightforward agency, and has never played any games that I'm aware of.

My suggestion?  Call them, leave them a contact number and tell them if they're willing to take the $1K you have available, to give you a call.  If things aren't busy, you'll probably hear from them.