I've heard good things about cloudflares domain registrar services. I can't vouch for them but when I looked at transferring my domains, their prices were very competitive and sometimes cheaper than the average.

I’ve found most registrars will at least list the price after the first year. So you should be able to buy it for $0.01 with the clear knowledge of the normal yearly price to expect. I’ve used Cloudflare for registration and they’re pretty good, only issue was some TLDs that weren’t supported by them. PorkBun seems to get a good review. I personally use a local registrar who offers TLDs local to my country.

Cloudflare

You mentioned this elsewhere, but for those who don't know xyz 1.111B class are incredibly cheap numerical xyz domains.

Google domains served me well before Google decided to kill it.... oh well....

Porkbun is very straightforward with renewal prices, great registrar all around.

Personally I've had good experience with Namecheap, I would've said Google Domains but...yeah....