Yohan -
A couple of things you have not taken into consideration. First, if the shop doesn't pay what you want, don't take it. Second, even if it does, you need to expand your scope and become a route shopper where you can maximize your return for the time spent. Trust me, I know route shoppers who make good five figure incomes. Third, you rail against the MSCs (and their staff, I trust) without any knowledge of the huge number of so-called mystery shoppers who do not follow guidelines, can't write English, do not read any extra notes about a shop; all of which causes the MSC to spend extra time and money paying their editors to straighten out reports. I know an editor whose piecework pay does not truly compensation for the inordinate amount of time she has to spend in finalizing a report (contacting the shopper several times, for instance, which delays the report by as much as 12 hours). There are too many crap shoppers out there for me to want to be organized with them. Last, I'm sure you have not been in a union or you would not want to join one for this kind of work. The union dues would gag you, on moral grounds if nothing else - "pay to work" is required for a union member, while it is not for the free-lance mystery shopper. Don't get me wrong, unions are great for certain industries, but in view of my above comments about the many low-quality shoppers, they could not get accepted into the union because of low skill levels. Oh, they can get trained, by the union, and for a fee. THEN they could get work - IF and only IF the ultimate customer were willing to pay an even higher price for their reports. In this economy? Fahgeddabowdit.