One Stop Plus offers these Peel-and-Stick Magic Gel Wall Tiles in four styles (Black Onyx Mosaic pictured) for $21.99. Coupon code "BHMOVING" cuts them to $17.59. With $5.99 for shipping, that's $52 off list and the lowest price we could find. Each set includes four 9-square-inch tiles with peel and stick application.