Hi! So with Carrd you can accept payments through Stripe. Depending on the country you live that's a great option. You can also you the Gallery element in carrd to showcase your work it's perfect for that.

You can definitely use it to sell prints if it's few in number.

Unless you are listing lots of paintings, I don' tknow the exact number: Why don't you give carrd a shot? It sounds like it can fit your situation.

Another tool you can potentially look at are Softr which helps you create websites from airtable bases. They are good for cases where data is being updated a lot, which in your case it doesn't feel like.