Right now iPage has the cheapest first year at $19.99, and Instra the cheapest renewal at $17.49. Over three years the lowest total at one registrar is $59.97 at Instra.
Why does .accountant cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at iPage, .accountant renews at $87.99 after a $19.99 first year. Compare the renewal and 3-year columns before you buy.