Right now Regery has the cheapest first year at $6.99, and Regery the cheapest renewal at $25.99. Over three years the lowest total at one registrar is $58.97 at Regery.
Why does .barcelona cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at Regery, .barcelona renews at $25.99 after a $6.99 first year. Compare the renewal and 3-year columns before you buy.