“This was the original price,” Serap Jangbu Sherpa assured them as he pulled down a waterproof jacket from the rafters, “but now you get 35 percent discount.”

It was fall clearance at Tent & Trails, a decades-old, family-owned outdoors retailer in Lower Manhattan, two blocks from the World Trade Center, and Serap was helping a group of three middle-aged Chinese tourists. One of them tried on the jacket, held his arms wide, gestured to his companions for advice. Recognizing a language barrier, Serap retrieved a notepad from his desk and wrote out some calculations. “This is how much you save.”

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