YaMiYo via Amazon offers Prime members the Newisland Speed Cube for $11.99. Apply coupon code "NE66VHGG" to cut the price to $8.99. With free shipping, that's $11 off and the lowest total price we could find. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $4.01.) It features six solid colored plastic surfaces, drop- and water-resistant design, and a carrying bag.