Most of the stuff looks like cheap junk, as you go up and down the aisles. Finally, you're in the last row. The shopkeeper is having an argument with a customer. "I don't normally give refunds, but this obviously didn't work properly."
"Obviously!" exclaimed the clerk looking down at the box and at the customer and back and forth. Then shaking his head, he said, "Come with me into the back room. I may have something to resolve your -er, situation."
The tall muscular man in the cut off shorts and vest followed the clerk with the box through the curtain into the back room, while you pretend to examine a book written in a language you cannot even read.
You wait a bit. Then set down the book, and head closer to the curtain. You hear footsteps and voices, and turn your back and pick up a Chinese finger trap and study it.
The clerk exits holding the curtain for a petite buxom blonde woman in shorts and a halter top. You blink. You're sure it's the same outfit that the guy wore minutes earlier.
"Oh, thank you so much," gushed the woman, "I couldn't have gone another day in that hairy body."
You duck back through the swaying curtain as the clerk and woman head to the front.
You notice a black curtain leading to the backroom. It isn't marked employees only, so you duck through the curtain.