Doris, it will cost you to get the list of all the places that MIGHT pay you. You have to send your money to the place in the ad, then they will give you access to the list. Then you go to each place and sign up. It's up to the places to decide if they need someone in your area, your age, sex, number of kids, etc,. Then you may get picked. This is one of those things where I think the only person making any money is the one who sent you the ad. If it was so easy, I think the people who actually hire the "mystery shoppers" would be advertizing. If anyone has done this, I would like to know, but the old saying "If it seems to good to be true, it probably is" keeps me from sending any money.