Cost is an obvious consideration for any new or existing secret shopping initiative. The cost to you will depend on the complexity of each mystery shop.
You’re basically paying for someone’s time and expertise. For a quick secret shop that takes 15 minutes onsite (and probably another 20 minutes preparing the report) you should plan on spending approximately $75 – $125 per shop.
The more complex, the higher the cost. Of course, your actual cost will also have factors such as the length of time you’re willing to commit to (e.g. 1 month vs. 12 months) and the actual time the evaluation takes the shopper to do.