Amazon offers Prime members the Rain-X Glass Treatment 16-oz. Spray Bottle for $5.49 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise it adds $6.79.) That's the lowest total price we could find by $5, outside of the mention below. Applied to your windshield, it purports to improve all-weather visibility and repel rain, sleet, and snow.
A close price: Advance Auto Parts offers it for $5.99 with in-store pickup.
$5 free shipping w/ PrimeShop Now
Posted 2 hr 52 min ago