Visited Tony's at the beginning of the month. Single visit 120 baht, more for sauna if you want to use it. 40 baht for a towel so bring my own next time (message to me!).
A reasonable range of machines and weights for the amateur, shallow pool and sauna on top of 3 floors. Very 'straight' but then I didn't go in to the sauna which was small, well lit and packed with laughing jolly falangs etc. Some big (duh) guys doing real weights & FB's too. All very polite and friendly really.
Regular visits see great reduction in cost.
Definitely recommended but if you want sex... Put it this way if I ever get the nod or get to bob my head I'll do a post.
Here is copy of the receipt with all details, phone etc FYI