How much does a granite slab cost for a kitchen countertop?

We're currently renovating our medium-sized kitchen and looking to upgrade to an exotic granite slab countertop.  We've looked at a few granite suppliers, however we'd like to stick with Interstone.  How much does an exotic granite slab cost for a medium sized countertop? 
Thank you!


By Interstone Marble and Granite Limited
We sell full slabs to fabricators by square footage, and the fabricators consider the cost of the selected slab(s) and expenses of installation of your stone to determine the cost of your project. Therefore, the total cost to you can only come from your fabricator.