Right now Sav has the cheapest first year at $0.99, and Sav the cheapest renewal at $15.78. Over three years the lowest total at one registrar is $32.55 at Sav.
Why does .best cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at Sav, .best renews at $15.78 after a $0.99 first year. Compare the renewal and 3-year columns before you buy.