For Prime members only, Amazon offers the Wham-O Hamper Hoops for $9.98 with free shipping. That's the lowest total price we could find by $3. It features a 2-in-1 over-the-door basketball hoop with detachable laundry bag.
Don't mind picking it up? Toys"R"Us and Bed, Bath, & Beyond charge the same via in-store pickup.