Legos are expensive as hell. Let's do the math... on the Lego web site (http://shop.lego.com), the price for the 650 piece LEGO® Basic Bricks Deluxe is $29.99. For 20,000 pieces, you would need about 31 of these kits, bringing the total to about $930 before tax & shipping. We'll, I guess it's cheaper than granite.