Originally Posted by Drip

Don't bother with material storage, unless you maxed out your flower girl capacity and somehow are still short on space. In the latter case, I'd rather suggest merging dupes, training some low level girls, and selling crap though, since I really don't see why one would currently need so much space.
To make things worse: material storage costs as much as girl "storage" (I prefer to call it harem-capacity). So when in doubt, increase harem capacity instead, since that's multifunctional, and can be used as material storage as well.

Material storage is flat-out a BAD deal. Would've been good if it was infinite, or very useful if the items inside could stack, so, for example, 99 red lvl 100 bloom dragons would only take 1 single slot. Or, if at least, the price had been 20 slots for 1FG instead of using the exact same price as harem capacity. But, we got none of those three different variations which would've made material storage worth buying.

I have no dupes

Pretty much what takes so much space is Dragons + 2 rows of Lvl 100 Manyus

https://i.imgur.com/F8OmfxQ.jpg
https://i.imgur.com/hexn3OA.jpg
https://i.imgur.com/U3sqLiW.jpg
https://i.imgur.com/nwkaXHD.jpg
https://i.imgur.com/hKUMaiP.jpg

I haven't max out capacity yet. I'll do that.