You visited 3 times, for how long? Probably not for very long, because your post smacks of ignorance. Scams and overcharging are endemic in Vietnam. I must have spent 7 years in a different Vietnam, a parallel universe Vietnam, because in my Vietnam overcharging is as rare, if not rarer than in Thailand, it was endemic 30 years ago, but with the exception of Hoi An, and maybe Hà Nội it isn't anymore. Cost of accommodation is spiralling? Where in Vietnam? Certainly not hotels, they are 30% to 40% cheaper than in Thailand. Bánh mì is 50 cents, not 1$ in most places. Fruit and vegetables are a lot cheaper in Vietnam. And visa policies are better, too unlimited, back to back, 90 day visas. Thailand, on the other hand, changes their visa policies twice a year,