Well, most domain registrars resort to this tactic of charging very high prices for domain name renewal.
But, I can mention two registrars that provide domain renewal at the cheapest prices – ZNetLive & NameCheap.
ZNetLive’s domain renewal prices znetlive.com/buy-domains/domain-pricing/ are same as domain registration price. You can renew a .COM domain at just $8.83, .NET at $8.56 & .IN at $7.66.
ZNetLive also brings offers from time to time that further cuts down the domain registration price. Currently, ZNetLive offers .COM at $1.42. znetlive.com/buy-domains/cheap-com-sale-89/
NameCheap namecheap.com/domains/ also offers the domain registration & renewal at the same price. You can register/renew a .COM domain at just $10.69/year.