Shemp was one of the few that I did buy an account with. Unfortunately he sold it and now it's a tube.
I've had an account at BoneMe for the last few months. Lots of traffic but the only sales were to one shemale sponsor and now I'm not even seeing that so not renewing it.
Snake's World is now a tube.
May buy one at Richard's Ream next month.
If you do buy a pass at someplace about the only way you are going to see sales if it is something unique that the surfers haven't seen before.