This Backyard Grill 17.5" Charcoal Grill drops from $24 to $14.99 at Walmart.com. Shipping adds $4.97 or is free with in-store pickup. This is the lowest price we could find for any similar grill by $5. It features 302 sq. in. of cooking surface, can cook up to 16 burgers at once, and has a bottom storage shelf. Sales tax is charged in most states.