Right now internet.bs has the cheapest first year at $31.60, and Regery the cheapest renewal at $43.99. Over three years the lowest total at one registrar is $131.97 at Regery.
Why does .pe cost more after the first year?
Many registrars sell the first year below cost and recover it at renewal: at internet.bs, .pe renews at $77.90 after a $31.60 first year. Compare the renewal and 3-year columns before you buy.