Overstock has hands down the best price for these block tiles, given the manufacture could price this product slightly lower. I recently covered my entire screen in patio and it took 6 box at 30 pieces per box to complete. It really stands out verse just painting, and that you would have to do as often as every year. I plan on doing my garage next in the gray rather than the brown I've used on my patio. It rained a few times since and within an hour the water drains or settles below making it a solid safety product.