I think you might want to revise your pricing. For that amount it will cost me 4K to make a single stone table. Assuming im a crafter making that table to sell, i would need to sell that for more than 4k to earn any kind of return.
uo.com
Check out what you can make and try to work backwards to the granite. It's a tough sale.
A single gargish bed is 100 stone to make - so at your price for a reg granite bed its 45k for that bed....
On the other hand I do not claim to be all knowing here and maybe these things will fly off the vendor. I'm just basing this on demand I've observed.