Me = not super-vamp

I'm talking to a potential client who wants to meet up before I fly out. He reminded me of a boy I'd met in Florida over spring break one year. He is really very good-looking and fairly young, maybe 30, and I was surprised that he'd expressed so much ardent interest.
Unfortunately, he lives pretty far away near the airport. He'd wanted me to come on Saturday and leave Sunday, and I questioned whether or not he knew I was a call girl and that 24 hours would be fairly expensive.
He said that he realized that, and really wanted to see me.
Since then, I've been getting almost daily IMs from him saying how much he wants to see me and how much he is fantasizing about us together. It kind of concerns me a little, because no other clients IM me daily and he always ends his conversations with copious kiss emoticons.

Example from last night:
Him: I look forward to talking with you again -- you're a charmer ;-)
Me: thanks! you are, too
Him: 'night :-*:-*:-*:-*:-*:-*

Example from today:
Him: If I don't stop thinking about you I'll never make it to work.
Him: Have a good day.
Him: :-*:-*:-*:-*:-*

Upon agreeing to see him:
Him: Awesome. I wonder how many times I'll fantasize about you between now and then...
Him: Not including the twelve I've had since we started this IM ;-)
Him: :-*:-P:-D

Obviously these are just small snippets taken from the long conversation in the window I had open, but most other clients tend to keep their distance a little, at least until I meet them in person. He also sent me a link to his photo or hotornot.com, which I found amusing. (He has an 8.1/10, fyi.)

At any rate, the other night he called to see if I would be able to see him soon, and I mentioned that I'd be in the area. He then asked, "How much would the overnight run you? What do you think about $400?"
Four hundred dollars? I've never done an overnight, but I was sure thinking of a LOT more than that, especially from a guy who seemed so eager to meet me and sent me daily IMs telling me that I was really hot. He's sent so many IMs that I'm worried I'm going to disappoint when he sees me in person and realizes I'm not actually super-vamp and instead am just a regular girl.
"Uhm, I was thinking of upwards of $1000."
"Well, shit, I can't afford that. Why so much?"
"Well, you see, I can see two other clients at one hour each and make what you want for an entire night."
"We wouldn't be in bed the whole time, though, I'd take you out and show you the town and buy you drinks and dinner."

But still, it's the company that I'm not sure about. I can manage with sex just fine, but being charming and beautiful for 24 hours on end is something I haven't dealt with since I rushed sororities.
So instead I am going to see him on Sunday for two hours before I leave. I hope it goes well and that I don't disappoint/am made uncomfortable/am kidnapped by lonely/passionate beefcake.