Ending today, Groupon offers the Modernhome Seal-Tight 3-Piece Lunchbox Set in four colors (Red Dahlia pictured) for $9.99. Coupon code "SALE3" cuts it to $8.99. With $3.99 for shipping, that's $10 off and the lowest total price we could find. It includes a small 4x6x2" lunchbox, medium 5x7x2" lunchbox, and large 6x8x3" lunchbox.