I'm a gay escort in Los Angeles - $2,500/night is an off the charts fee. Usually can only command anywhere near that if two clients are competing for an escort's services for the same night. Or if the escort moves in the ranks of extremely wealthy, cash loose men. That said, under more normal circumstances, you might tip a similar amount after a particularly fun weekend trip, for instance, with a guy you really liked.
If you go to rentboy.com or men4rentnow.com, you'll see handsome guys willing to do a massage with happy ending for $60, and guys who do overnight appointments only for around $1,000/$1,200. A date with a high-end, handsome escort is probably in the $250-$300/hour range in Los Angeles. A tuesday afternoon appointment will also be cheaper than a Saturday night one, even if there is just one hourly price listed next to the guy's name . So if you are thinking Tuesday afternoon, email your prospective escort with an offer and he may go for it.
If you want to pay $2,500, my advice is to go to a gay club, approach the guy who turns you on the most and offer it to him. I bet he takes you up on it, lol. (Although, he may not turn out to be as fun in the sack as a good escort.)