The cost of registering a domain name under a given TLD has nothing to do with how Google–or any search engine–would rank it for search results.
What registrar would this even be based on? Right now, NetSol registers
.info at $34.99, but GoDaddy is offering them at $1.99 (down from a normal $11.99). The difference in their pricing for
.in is about the same. Other registrars don't offer
.info at all, and I don't think any one registrar handles all the TLD, so there wouldn't be a central source.
As a sideline, you might also be interested in the answers to this previous question about Google penalizing some TLD. (They don't.)