Amazon offers the Lowepro Ridge 10 Camera Case in Red (pictured), model no. 34715, for $3.37 with free shipping. That's the lowest total price we could find by $12. Features include a zippered front pocket, rear zipper, expandable front pocket, adjustable shoulder strap, and more.

Of note, Amazon also offers this bag in Black, model no. 34711, for $3.88 with free shipping. (Best Buy charges pennies more.) That's the lowest total price we could find by $8.