Storenvy is completely free which is partially why I chose it over Etsy, though it does have some subscriber features like the ability to use discount codes and other paid promotions. It's super easy to set up but you need a Paypal, as that's the only credit processing service they use (which means Paypal takes a small cut every time you make a sale).

You should totally get a copy! All the parents I've sold copies to say their kids love it. :)