The boy drinks in the Jomtien host bars vary between 140 & 160, with 150 as the norm.
The boys get 50 or 60 baht per drink.
In many of the bars, that's all they get from the bar, so they can come & go as they please.
I agree the prices at Pikkys are on the high side.
I usually tip 200, or more if there for several drinks.