Right now Sav has the cheapest first year at $9.54, and Sav the cheapest renewal at $41.38. Over three years the lowest total at one registrar is $92.30 at Sav.
Why does .design cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at Sav, .design renews at $41.38 after a $9.54 first year. Compare the renewal and 3-year columns before you buy.