Super Deal via Amazon offers Prime members the ClearMax 18" 3-Prong 1-to-4 Power Cord Splitter Cable 3-Pack in Black, model no. 1TO4EXTENSION, $18.39 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $7.62.) That's the lowest total price we could find by $45. Each 18" UL-approved cable features molded water-resistant blades.