Say Agnes's regular rate is $250/hour
You could play for $125, with maximum time for poker determined beforehand, and a timer so no slow playing if you're losing.
If you haven't called/raised by timer ding, you fold your hand.
You bring $400, it's all on the table. You either get the lady for 1/2 price, or she makes 150% of her normal rate.
Should you find an escort who considers herself a decent poker player, you might have some luck finding a game.
Play for half hour, pay the lady $25 for her time, as she should be compensated for that.
End result, whoever is winning at end of Poker Time gets their rate.
You pay $25 for the privlege of playing, and should you win, $125 for an hour of play, total $150.
Should you lose, $25 for playing, and $350 for an hour of play, total $375.
Could be fun, no one gets totally burned, and it's a little different.
For a lady that only takes a couple of appointments a day, the 1/2 hour of cards might be an enjoyable diversion.
Would this work?