It’s time to stock up on windshield washer fluid now that the days are starting to get cooler. Costco is ready to help you out! They have a number of ways for you to bulk purchase washer fluid. You can get it in the ultra cheap 26 pallet bulk pack for only $11999.99 (delivery is included). Alternatively, if you don’t need 5408 4L jugs to get you through the winter, why not just get the single pallet bulk pack for $549.99 (again, delivery is included).