Here is my current method for storing my flavors,
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It is a "Husky 18 inch Interlocking Organizer".
This is case #3 (sigh... so much for limits)
Those are 10ml, can fit 11 easily in the small bins, 12 are a bit squished. 25 bottles fit nicely in the larger bins.
So 138 10ml plastic bottles will fit nicely, a few more if they are squished in. Glass droppers (like from One On One) take up a little more room, so less of those will fit. (probably, have some but didn't really count how many will fit yet)
30ml sort of fit in the case without the bins, but bow the lid a bit to close it. Due to raised parts on the bottom of the case, the 30s sort of have to be in groups with a little space in between. So not really the best solution for those.
I probably will wait until I do one more larger flavor order before I really get down to sorting, indexing, and labeling properly.
And getting case #4.
(And then #5, #6, etc)