Amazon offers its Prime members the Totally Bamboo 3-Piece Cutting Board Set, model no. 20-7930, for $12.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $7.72.) That's the lowest total price we could find by $5. It features 6" x 8", 9" x 11", and 10" x 13" boards.