Amazon offers Prime members the Goodyear 50-Foot 3/8" Rubber Air Hose, model no. 46502, for $22.30 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $10.20.) That's the lowest total price we could find by $11. It features 1/4" MNPT ends and a maximum working pressure of 250 PSI.