I watched a video on you tube by the retired working for you guy. He interviewed an official at immigration in charge of overseeing this visa. He made it clear you can come and go as many entries as you want. Really worth a watch
these remarks show an absolute disconnect from thai way of life and how much they pay to live. Never been scammed because he thinks what he is being charged is reasonable - given that everything is relative. Its def reasonable to charge him farang price.
Taxi driver tried to charge me 1000tb to go 8km the other day would have been 100in a bolt. ( which is more than thai folk are willing to pay) i live amongst thais, no falang alt culture here.