Basically same question as the title. I have a lot of materials I've made myself over the years and I always get complimented on them. I've heard the story about the Teachers Pay Teacher millionaire, but I wonder how much the average user makes. Has anyone sold there? I'm not looking to hear about buying. I think it would involve a lot scanning, or mailing. So, I don't really want to sign up before I can the low down on them.