There are always 6-10 Russian or Eastern European hookers who hang out in CM2 (Novotel/Siam Square) every night. They dont look great to me but each to their own. To be honest they dont look as though they get much action and always look a bit bored. In my more naive days I started chatting to one thinking she was a tourist hanging out looking for a good time.
Some Russians lookers on Walking street apparently asking the same price as the Thais. Plenty of Russians in Bahrain and Dubai so they do not tempt me. Hard as nails most of them.