Hey tim,
I told you they would not let me buy them! and i can now effectively fit 169 2×4 bricks in the cup without breaking it or getting told i cant do that. So the math works out to about $65 per case of the 2×4 bricks if you use the method i went by.
https://www.youtube.com/watch?v=fED5J10hT10 you will notice the two end “circles” need to be switched around to fit properly.