That's a hard question to answer due to the different classes of granite. Cheap builder grade granite is less expensive than what I offer, and class 5 is significantly more expensive. I bid an entire house today that was 110 s/f for $4950, the customer has a 5'x9' island and I was about $3000 less than the granite they were quoted. I think for the regular counter tops I was just slightly less than their granite but because of the size of the island and the cost of one giant piece of stone like that I was able to save them a lot of money. The real value I bring to the table is speed, customization, and the fact that my product is seamless. Most of my jobs are around $45 s/f, but if people go crazy custom it can get pretty pricey. Sorry it took me so long to get back to you! Here's a link to my houzz page so you can see a few examples.
http://www.houzz.com/pro/tyler6423/earth-and-iron
