I have a shop on Etsy, which I have been running for 5 years. So far I have over 500 sales. It is just a hobby and I don't really make any money out of it, but I know there are many UK sellers who do very well. They are mostly selling supplies such as felt die cuts, planners etc, although this is not my specialty. A few years ago, Etsy marketed globally, ut they then introduced local marketing, which means that Uk products are mostly seen by UK buyers, thereby cutting off most USA sales. The site also has lots of resellers of cheap imported goods, whereas in the beginning they were a purely handmade site. Things changed when they went public, so now it is more about creating money for shareholders. However, if you want to sell as a hobby then it can be quite good. If you would like any more info then please pm me.