Why don't you just meet up with another gay guy, buy a dress and take turns in fucking each other, save you both some moey and you can reuse the dress loads of times, or even cheaper just close your eyes or turn the lights out 
If it's not for you, fine- don't read the thread and move on. Everyone's different. The fact that the guy is asking means it obviously is a turn-on for him so if that turns you off just ignore it, don't waste everyone's time with sarcastic comments.
FYI the experience of being with a TS is utterly different from being with a man. Some are extremely feminine and sexy, and if you're a little bit bi or even curious the whole idea of a very feminine sexy face/tits with a cock attached is pretty damn hot.
Anyway, back to the OP: have a browse in a forum called Hung Angels, where there are reviews of TS escorts very much like UKP. You will get a feel for the right type of person to go for, and there's lots of information about websites and agencies where you can find one.
Personally if you're into being submissive I can't recommend Alekssandra highly enough- I have had several sessions with her and she is amazing. She is very dominant and will take full advantage of her more experienced customers

but if you tell her it's your first time she will take it easy- though you'll know who's in control

There are also agencies like London Ladyboys and others where you can request someone who's good with first-timers.
Good luck and feel free to pm if you want to ask anything more specific.
Doug