Clarks Goldmix (quartzite) available?

I was told by a Dutch importer that the quartzite flagStone (http://g603.net) named Clark's Goldmix is practically not available anymore. For a new house I need about 100 m2. If not any more available, Albino might be a good alternative. What would be reasonable prices USA FOB or including shipment to the Netherland (http://maplered.com) s? If this is not the right forum for private persons, I may bring a supplier in contact with an importer.
Thank you, Julius