Buyer Beware: Cloudflare Registrar Prices will Increase

It still won’t make a difference though, even if Cloudflare does place a “Prices will never ever change, we pinky-promise” clause in the agreement, they have no obligation to accept future business (renewals) under prior terms, they can simply offer a new DRA with a new pricing structure and if you don’t like it, you’re always free to transfer domains elsewhere before the conclusion of your contracted service.

While it may be possible to write contacts that guarantee future offers of services, this would be fairly close to a futures contract and is almost definitely not something you’ll see offered in the internet world outside of enterprise contracts.