I don't go into a SB first date "expecting" or demanding sex, except for the obvious hooker ads. If she wants to meet at a hotel, she's a hooker. If she wants to come to your house, she's a hooker.
I do however seem to get a lot of "first date sex" especially if the first date is a dinner date, not lunch or coffee. I don't expect it, I certainly don't demand it, but I have had a LOT of success on first dates, many of the times having sex before we were even clear on an allowance expectation. What ever I am doing on these first dates, I have NO intentions of changing, because it is apparently working.
As for offering a "taste of sugar" on a first date, I usually don't even mention it before a first date, but I am very clear that this is an "arrangement" and that I have no problem providing sugar. I have not to date offered any money "just to meet" but there are a couple of VERY attractive women in my area whose inboxes just have to be jam packed, I may try your approach on a couple of those women, as you say the worst that can happen is that I am out a hundred bucks.
Now all that said, how about we get back to my actual question, what do you do when you do get "catfished"??? Just like NCNS in the hooker world, no matter how careful you are, if you have enough dates it's going to eventually happen to all of us. So, do you, go through with the date? Turn around and walk? Have a quick drink and call it a night? Give her money for "her time, even though she lied to you?
Speaking for myself, it's happened to me twice recently. Luck of the draw and I am certainly not "whining" about it. Both times I have gone through with the date, believe it or not from my board rep, I get no pleasure out of hurting anyone's feelings and I can't bring myself to tell a non hooker who is not trying to scam me out of money that she is "fat or ugly" I do make it quite clear that we can not be anything more than friends, that no money is ever going to be exchanged, and I will at least hint strongly that the reason is a lack of attraction, or "not my type"
I am a bit curious to see how other guys either handle it, or how they plan on handling it if and when it ever happens to them?