Amazon offers the Rola Wallaroo Cargo Bag in Black for $41.75. Clip the on-page coupon to cut it to $27.83. Plus, Prime members get free shipping. That's tied with last week's mention and the lowest price we could find by $12. It expands to 48" x 19" x 22" and features six straps, two interior pockets, and sonically sealed seams.