Originally Posted by sarettah

The price is set by the registrar for for any particular TLD and the renewal is almost always more expensive then the original registration.

It does not appear that Namecheap makes it easy to find it's price list but there are some 3rd party sites that show price comparisons by tld.

https://www.domcomp.com/tld/co Shows the various .co prices being charged, not sure how accurate it is but it says the prices were updated an hour ago.

It looks like the cheapest .co renewal is dreamhost at $15.99/domain.

They also have comparison pages for each tld for registration, rebewal and transfer. https://www.domcomp.com/

I have most of my domains at namesilo but I have some at namecheap and uniregistry because namesilo does not cover all tlds.

.