American red plums, which are significantly larger than Vietnamese plums, have gained popularity in Vietnam despite their high prices, which can reach up to 500,000 VND per kg. In Hanoi, these plums are sold for 249,000 to 299,000 VND per kg. Experts like Mr. Vo Thanh Loc and Ms. Nguyen Huyen warn that officially imported US plums should not be this cheap due to high transportation costs, suggesting that lower-priced options may be of inferior quality. Consumers are advised to buy from reputable stores with clear origin documentation.