Sears has the Thule Quest Soft Sided Cargo Carrier for $49.99 + $1 filler - $5 off with coupon code SEARS2013 = $46 with free in-store pickup. Shipping free with a $59+ purchase. Features four attachment straps and can attach to nearly any installed roof rack. Adds 13 cu. ft. of storage space. Has good Amazon reviews and is normally $80 or more.