I really like massages. For me, I usually get more out of a massage boy than offing a boy at a club.

 

you are not alone having that impression, the same goes with  straight 'gay for pay' boys as opposite to gay go-go as long as I can see it 

I have a habit of checking the slip everytime they put one in the bin. I have never had the wrong amount or wrong change given. But on my trip last month, I had a boy buy himself a drink. He tried to slip his slip into my bin. I caught him and he got into a lot of trouble from management.

I sit at Hot Male and order food from Maxis often. It seems I never get charged the same from night to night. Usually within 10-20 baht, so I don't say anything .

I've not had boys sneak their slips into my bin.  

I've had them sneak into the seat next to me uninvited & the waiter immediately asks if I want to buy them a drink.

In one case, the waiter ignored my reply of NO thank you.  So I stuffed the exact change for my drink in the check bin and paid another waiter on the way out, before the original waiter returned.

 

I suppose I might have been overcharged here and there.  Very possible when there is no visible price list.