The sheer number of items made me avoid these for years, then I tried one because I was putting together a route and it made economic sense. Now they are a Yay! There is a relatively short learning curve to gain efficiency when doing sizing audits. The thrift shop ones are typically faster to complete on-site than the retail ones. Why? You go by the pricing tag for thrift but you need find the actual sizing label on each piece of clothing for the retail one. The pricing tags are usually in the same exterior spot on each thrift item which greatly speeds things up. You can gain speed in retail by learning where the different brands put their sizing tags and how they present the information. (Just an "M' or the word "Medium", etc.) You quickly develop ways that work best for you to find the data and record the errors. If you end up with a store that is a mess, avoid it in the future. There are a bazillion fewer ways to goof up these assignment than with typical mystery shops. These are low stress, no money out of pocket, and the super short reports with no chatty narrative (uploading a few pictures and explaining what you found if there are more than X number of mis-sizings) make for an overall good value for these shops even at $17 which is the typical non-bonused amount in Western Washington. P.S. If I'm in the mood to shop, I'll audit my size ranges. If I want to hurry, I pick the size ranges that definitely won't fit!