I just opened my TPT store last month. I haven't made millions or even hundreds of dollars yet, but I still can't complain. I just upgraded to the premium membership a couple of days ago. With a basic seller account you get 60% of a product sold minus a $0.30 transaction free. So on a $5 item you would make $2.70. With a premium membership you'd make $4.25 on that same item. The premium membership is $59.95 a year.