As you will visit any provincial of Cambodia, Mondulkiri province you can buy most commodity at every market located near center of town, even though small towns like have at least one market for shopping.
Many of the goods in the market are from nearby Vietnam, It’s an all-purpose market, but it doesn’t have the feel of the typical Cambodian market, which is probably again due to the closeness of Vietnam and the hill tribe people who come here. There are definitely some nice bracelets, adornments or Kramas made by the hill tribes acquirable. You’ll find noodle, dessert and fruit stalls at the font end of the market and the moneychangers are in front as well. They change dollars, riel and the Vietnamese dong.