How to Use "shopper" with Example Sentences

1. I want to be like a mystery shopper .
2. The mystery shopper is a globetrotting executive who shops as she travels for work
3. This is time-consuming for staff and shopper alike .
4. And a curiosity : this behaviour was substantially more common when the mystery shopper was a woman .
5. Apple 's other store in beijing sold out of its stock of 2000 by 9 am , one shopper at the store was told .