Meguiar’s X2020 Microfiber (3-Pack) for $6.99. Here is a screenshot for your reference. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order for free shipping. You can make it even better by ordering 4 of these and get one for free. Withe its lower price for each 3-pack and the buy-4-get-1-free offer, this works out to be about 35% less than most places.