Walmart offers the Rachael Ray Universal Thermal Carrier in Red, model no. 7-55900-05-91, for $10.42. Opt for in-store pickup to dodge the $4.97 shipping fee. (Amazon charges the same for Prime members). That's the lowest total price we could find by $6. This carrier fits most 9" x 13" baking dishes and features a carry handle.
Prefer another color? Walmart and Amazon also stock it in Green for $15.98.