I was part of GumRoad's recent 10-day challenge called Small Product Lab. I had this feeling that they were getting very good at their business. I'm about to finish up work on my ebook. I was to go with GumRoad. As per my research, they were THE best in terms of design, seller pricing and payment experience for end-users.

The next best would be PulleyApp.com by BigCartel. Costs $6/month. Nowhere near Gumroad's percent-per-sale pricing. But BigCartel.com has been around for a long time (I remember they focussed on helping people sell tshirts online). PulleyApp is just their digital variant.

The main downside of most GumRoad-alternatives is that if the product's sales go down or just die out. Unless seller has made huge amounts of profits (say $10k), then paying $6/month to keep it alive for previous customers might slowly leak out profits previously made.

If anyone is to buy Gumroad, it should be Twitter (or Facebook?). They have the buy button and GumRoad would be a nice fit for small sellers.