Amazon offers the Chemical Guys Grit Guard in Blue for $5.33 with free shipping via the steps below. That's the lowest price we could find by $8 in any color. It fits the bottom of any 3 to 6-gallon bucket to trap debris in the bottom. To get this deal:

1. View the Chemical Guys Grit Guard for $8.20
2. clip the 20% off coupon on the product page
3. check out via Subscribe & Save for a final price of $5.33 with free shipping

Note: Be sure to cancel Subscribe & Save after your item ships to avoid being billed for future shipments.