It also depends on how set you are in having things a certain way. For example if you wanted granite counters, the price can vary depending on the colour. It also depends on the supplier. When I called around, I had quotes upwards of $150+/sq. ft. I made a lot of calls, one guy quoted $50/sq but had limited selection. Eventually, I found a rural supplier who quoted $5/sq for materials and $14/sq for cutting and polishing for a total of $19/sq. I think they reprocessed broken pieces, but had a huge selection and it fit the bill.