U can find plenty of post-op ladyboys from Thailand inside the walk-in brothels of the Frankfurt/Main redlight district (RLD) close to the Hauptbahnhof (main railway station).
Most of them are working in the bis EROS Center (aka Leierkasten) on Elbestrasse. They are located in the 2nd building and easily to recognise by their big shoe size and height ....
A simple suck and fuck will cost you anything from 30 Euro up. Remember: this is a short time place, only. All of the ladyboys have boyfriends to sponsor their visa and there are no refunds. Don't expect time for romance .... Be advised of a high security level in this establishment.
A small guide to the Frankfurt RLD (altough without TS info) can be found at this url:
http://frankfurt.usa-sexguide.com