Announced audits are so hit and miss that there isn't really any one company that could be said to have them regularly. The last one I did was for the app Fieldagent.
I was offered the $250 two to three day secret audit. I declined. As it was in an area with high shoplifting problems, I figured the likelihood of not getting caught getting prices was zero. I have seen a person collecting prices without permission escorted out of a grocery. I don't know the whole story, if it was a secret audit, or a data collection mission. Either way she was trying to be discreet while she used her phone, but she was still caught, questioned right in the aisle, and, not too politely marched out. I was doing a small coupon job down the aisle from her and felt really bad for her. Sometimes companies don't have a clue how difficult some of the assignments are to accomplish undercover.
Good luck to you.