 SAN DIEGO, June 7, 2021 PRNewswire -- PriceSmart, Inc. NASDAQ: PSMT today announced that net merchandise sales in May increased 16.3 to 286.4 million from 246.3 million in May a year earlier. Foreign currency exchange rate fluctuations impacted net merchandise sales negatively by 1.6, or 3.8 million, versus the same one-month period in the prior year. 