Looking to Buy Specific Bricks

Looking for a steady supply of Cool Violet Metamorphic Brick and Dark Grey Igneous Brick. Hoping to pay 6c or less per brick because of massive quantities. Let me know if you can get me started :smiley:
By massive I really do mean I need like 15k of EACH to just start.

May have it in stock at Brick R Us gyosha mall. Price for bricks are 7c though.