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Clothes hounds can buy, sell, and trade both new and used fashions at Buffalo Exchange. Kerstin and Spencer Block founded the original store in 1974 in Tucson, Arizona, and since then it has grown to include 37 stores and three franchises in thirteen states (including one location in Williamsburg). Though the outside of this East Village outpost is painted a cheery pink with a bright-orange awning, the inside is utilitarian and rather drab. No matter, when there are bargains to be had. The merchandise is a notch above other thrift chains, with brands like Betsey Johnson, Marc by Marc Jacobs, and Seven for All Mankind mixed among the racks, and the prices are comparably low: Most jeans are around $20, dresses are under $40, and designer bags are less than $100. — Leila Cohan

The green-minded chain donates five cents to charity for each customer who elects not to take a shopping bag, and periodic sales benefit local charities.

Dollar Day Sale on Earth Day