.email TLD is around $25/year, which seems too expensive when .com is less than a half, but it would make it easier to explain why there is no website behind my domain (as I just want something for email).
But there’s also more expensive options, so I am curious what you’re paying.
Porkbun 10$ for a year iirc for my .com
I moved there from Namecheap who wanted almost $17 for my domain, and didn’t provide API services