I never realized how rare clear bricks are! I'm looking for an efficient way to buy clear 2x4 (e.g. 3001) bricks in bulk. On BO, BL, and Peeron there are very small lots and prices close to $1 and beyond per brick. On Alibaba there are some new compatible brands but they tend to mix random colors and styles, no pure bulk packs of the same brick in clear (white).
While I can patch together an order from the above, I'm wondering if there is a manufacturer that just sells pure lots of the same type and color so I can keep buying from them and not have it be a brand new search each time.
Or do any markets exist that unlike PL/BO/Peeron include competing brands rather than only Lego?