For in-store pickup only, with stock varying by ZIP code, Home Depot offers this US Wire & Cable 100-foot 12/3 Outdoor Extension Cord, model no. 59100HD, for $39.88. (Amazon charges the same with free shipping, although shipping is delayed by two to five weeks.) That's the lowest price we could find for such a cable by $32. It features a thermoplastic jacket and a 300-volt transfer capacity.