As an artist who runs an etsy store and has art exhibitions (which I pay a gallery to hire a space) what would go in "Purchases and other costs" and "All other expenses"? To help, I've listed some of the things I want to claim:
1-Art materials used to make works & products to sell
2- Public and product liability insurance
3-Business name registration
4-iPads, DSLR camera, printers
5- Subscription services such as website, photoshop etc
6-Etsy fees
7-Gallery hire cost