No. 1 rule – if you feel uncomfortable, don’t meet.
That said, I wouldn’t given that exchange. This is the kind of exchange that leads to “constant texting,” in my opinion. I’m looking for more than sex, so I need more to know it’s going to work. We end up wasting time because information is not forthcoming...or easy. Also – why would I give you my money or let you fuck me if you can’t communicate with me?
Apropos tangent – I will ask an escort I’m booked with if it’s alright to text more than about the meetup before we meet. If he’s not into it, I only check in periodically. If he says he’s fine with it, then I feel it’s okay. I hope he’s honest with me!