Woot offers Zone Tech OR0033 Black Cargo Carrier - (Rack Not Included) for $21.99 (orig. $49.99). Free shipping for Prime Members.

Product Description:
The Zone Tech® Premium Quality Classic Black Cargo Carrier protects your luggage and other items on your cargo carrier from road grit, sun damage, and wind while adding a large capacity of 22 cubic feet of storage space. Which is large enough to fit four medium suitcases as well as other smaller packed or bagged items