I host my digital art shop on Ko-Fi, which is linked here.
Currently, the only product available is Wild Ink, an art book centered around animals.
I have an Inprnt account where I host my artwork to have it sold as prints. Inprnt produces high-quality, durable stuff. Though they can take a few weeks to ship things, I have no complaints about their services.
I have not started independently selling physical art yet. Since I already have a well-paying full-time job, I don't have much time or reason to do so. That said, I'm interested in eventually selling some of my work. I'd like to someday offer costume commissions on a sliding scale so that anyone can enjoy it.