Right now Sav has the cheapest first year at $13.18, and Epik the cheapest renewal at $25.43. Over three years the lowest total at one registrar is $65.08 at Sav.
Why does .luxury cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at Sav, .luxury renews at $25.95 after a $13.18 first year. Compare the renewal and 3-year columns before you buy.