How can I be sure that mystery shopping is a good investment?

We have been involved in numerous studies where mystery shopping results have been tracked alongside KPI's such as Average Transaction Value, Customer Conversion Rates, Sales Targets, etc. All go to prove that staff who score well in a mystery shopping study are more profitable to your business.

Assuming there is profit in what you sell, it therefore makes sense to invest money in your staff to help them become better at their job, to help them build transaction values and to help them close more sales.