My belief is that competitors are doing the hiring. They want to know what the competition is charging and they don't care if shoppers in the competitor's stores get upset. Why do you think some stores are throwing out the shoppers? Why would a store need to hire soneone to check their own prices? Competitors are doing the "hiring".
@Texans wrote:
I hate seeing these shoppers doing these price checks in stores. When I am going grocery shopping as a regular customer, these people stand there with their cell phones aimed at the items and getting in people's way. I don’t understand why a grocery store or any store would hire people to do this. It is extremely irritating.
Shopping Southeast Pennsylvania, Delaware above the canal, and South Jersey since 2008