I've got small projects that are in the $0-10 range, so I'm particularly interested in lower fees for small transactions.
In addition, I'm working on solution (https://rainex.io/) which can combine differen payment providers to recieve and collect peyments in one solution. There are many payment options you can use, which are convenient for your customers to use, so I think it's appropriate for this post.
What I worry about the most is (sales) taxing.