I have shopped Wegman's a few times. One was a comparison to another grocery store - probably pricing and service. I had to do both Wegman's and the other store. The other assignment was for the prepared foods area. I believe that may have also been another store comparing their prepared foods to Wegman's but I could be wrong.
Wegmans is shopped by 3 different companies for their competitors. All shops are for pricing, two are on an app and the third is the long lists of 50 items per list. Caution, Wegmans is very aggressive with competitors doing comparison pricing. I know of one shopper who was escorted out by security. They also have the signs by the entrance regarding competitors signing in! There are also occasional shops at W for companies that have their products sold there and just want to check something like the rice cake byes, or whether their marketing items are properly displayed, etc.