Pep Boys offers the Thule Sonic XL 17-Cubic-Foot Cargo Box, model no. 635S, for $569.99. Coupon code "FALL25" cuts it to $427.49. Opt for in-store pickup to avoid the $120 shipping charge. That's the lowest total price we could find by $203. It measures 34" x 16" and features dual-Side openings. Deal ends November 27.