As you can see, the Gumroad home page is friendly and simple in a cartoonish and welcoming way. It looks easy to use, and there is a huge amount of resources available, including examples, and Gumroad University with training resources and how-tos. If I was in the United States, even at the 10% plus processing fees, it would look very attractive. Also if you are not in the USA but do the vast majority of your business there, it sounds like Gumroad will be able to handle your taxes satisfactorily.  However, I have read people saying they had a lot of work to handle even Canadian taxes, so your mileage may vary. LemonSqueezy got favorable mentions there as a North American alternative.