32oz Rain-X Windshield Washer Booster $3.27 at Walmart $3.27 $13.54 Walmart has the 32oz Rain-X Windshield Washer Booster on sale for $3.27 with free shipping with Walmart+ (30-day trial) or on $35+. Lowers freeze point by at least 20 degrees F. $3.27 retail: $13.54 Report Posted by Faraday02/17/2024 at 09:30 PM PT