If you keep more than 1 stack of NQ/HQ of any item as a 'reserve for storage', you're simply hoarding, and should probably stop. Having it 'in the back' waiting for a spot on a retainer for sale is different, depending on the volume of sales you can expect.
I fully consume the raw material and discard excess when compressing into intermediaries. In the case of ores, I never 'store' ore other than iron (since it's used for three ingots). Therefore, those stacks of NQ/HQ ore simply do not exist on my retainer or inventory. Only working goods. I am not going to cry over throwing out a few scraps of material if it's uselessly consuming space.
This is even relieved further by removing HQ stacks of intermediates/ingredients that are 10 levels or more below mine. Those items have a minimal impact in quality during crafting and, if an HQ intermediary is advantageous, can be HQ'ed in my sleep with NQ ingredients.
You're saying I have 4 stacks of iron (NQ/HQ ore, NQ/HQ ingots) when in reality I have 1 stack of NQ iron ore. I don't have 4 stacks of Mythril. I discard excess ore, keep the HQ ingots I make for myself. I immediately process hides for LTW, immediately process lumber for CRP, etc.
Things DO get wierd for CUL's and ALC's, but that's a matter of controlling the impulse to casually buy too much of any one thing when you don't need it.
In regards to 'bulk' anything, there simply isn't the economy for people to think they can go around playing walmart and trying to be clever thinking there's any advantage to having a bottomless bag of everything laying around. It's just pack-ratting, plain and simple. If you're running around with 10 stacks of NQ and HQ moko grass "just in case", then you may need to re-evaluate what you're doing.
Glues, oils, and things, since I'm not an alchemist or weaver, I may have 2 stacks (Nq+HQ) since I'll take those ingredients however I can so I don't have to harass and chase people to have them made. If I have to buy something from the AH, it's usually in small quantities in a single stack.