Grindr, JackD, Hornet etc. Many are not mboys but those who were in most cases provided great value. The best lookers for me were in Ho Chi Minh City and the maximum I paid was 400 - 500k dong as requested by the guys. I guess some will want more as arsenal noted in his post but I was happy with the quality of the guys that I met. Hanoi contacts were asking more than HCM City but i did not require their services while I was there.