Cheapest I’ve found for a 12AWG reel of this length.

Description:

The Volt King 12-gauge self-retracting cord reel lets you pull out as much of the extension cord as you need, then retract it neatly with a quick tug on the end of the cord. It features three outlets at the end of the cord, a 180° swiveling design and an impact-resistant polypropylene case. The ball-style cord stop is adjustable so that any length of cord can be left trailing after it is retracted. Rid yourself of tangles and the hassle of recoiling a traditional extension cord with the Volt King cord reel.