Ask HN: What are the TLDs that have cheapest renewal fees

I host a lot of self-hosted applications and often need a domain to assign to them. For quite some time I used .tk .ga and .ca but they are not available anymore. Other TLDs that can be bought for cheap like 1-2 dollars levy around 20-50 dollars renewal fees. So, I need suggestions. Would love to find something for $1 that also RENEWS for $1.