When I was at Phuket, again in the late 70's it wasn't a holiday resort but a small island area with a tin mine iirc. The one plus at the time was the 'Coka Cola' girls who would be rowed out to the ships supposedly trying to sell you the aforementioned drink but as you can imagine were actually selling themselves.
The going rate back then was a carton of cigarettes which at the time cost £17