This is more about how you feel. How would you know if you’re being overcharged? If you can’t overcome that feeling that people are constantly out to take advantage of you, then you’re gonna have a bad time. Like I said, the best way to approach transactions in unfamiliar settings is to ask yourself “is this worth it to me”, rather than asking yourself “would locals pay this much?”. You can always walk away. If the vendor wants the sale, they’ll let you know.