I been a "Secret Shopper" on and off for about the last 10 years (working on one now, that's a 2 year gig). You're not going to make a lot of money at it. I used to work up to 4 a day (did this around other things I was going to be out doing), you have to do different things for different company's. I worked for myself as contract work, so you will get 1099'ed. Some company's will 1099 you from dollar 1 others only after a few jobs. The big thing is to keep track of your mileage and time for each job, this is also how you can make it pay. Because if you are going to be out in one part of town, that's when you want to work shopping jobs in the same area. You can PM me for more info if you want.