yeah same here. I canceled my account on name.com because I had previously obtained a .art domain maybe for ~15-20 USD / yr. Then they wanted $50 USD a year to extend it. No thanks, dropped the domain and moved to namecheap

If the price increase was from the registrar and not the registry you should have been able to move to a different registrar with saner prices.

Namecheap does the same thing though, at least they did with an .online domain I have.