There is a good market on the Ddomtien in the soi 5 area. In the evenings, a food court is set up on the market square, where you can taste Thai cuisine inexpensively.
A great market for locals: A gourmet Mecca, fruits, vegetables are twice as cheap as in the city. There are also seafood, shrimp at reasonable prices, fresh, still alive fish. In general, the market, with Asian highlights, I recommend as a micro-excursion
A cool market, a huge variety of fruits and vegetables (it's better not to look into the meat rows - flies, heat, blood and water right there in concrete trays). Fruit prices are minimal, Russians understand, they will advise varieties - to eat today or take home with you.