Yeah.. except there's a few.. problems.
A) The market board doesnt' always sell fast. If I want to sell fast, I have to sell them at the lowest price, and constantly check so that I don't get undercut... which I really don't have time to do so.. which leads to B, assuming I've sold all the materials.
B) Then I could jsut buy what I need, except SE in their infinite wisdom declared that we can only buy the amount that the players have put up, no more, no less. So if I want to buy, say.. maybe 2 or 3, then I have to buy them at a "premium cost" instead of 99. Of course I could just sell the rest, which.. goes back to A.
No, if I want to be easy, efficient, and time saving, I would go directly to my retainer, and tech the materials I need. That way I can have...
Easy access to my materials because it's all right there, held by my retainers. Time saving achieved!
I got the materials I need in a very fast manner, without having to spend gil. Efficient method achieved!
And I managed to not have to worry about checking my retainer every 5 minutes, just in case someone decided to undercut my price, thus making my life much easier Easy method achieved!
But hey, I'm always organizing my inventory, and at least having space. Thankfully I don't NEED HQ pre-HW items, so I usually reduce quality to save space.
GREAT POINT, except here's a big problem. That's implying that the ONLY use for GC Seals would be for those materials (Coke, Potash, etc). However, there's not. I use my GC seals a lot for ventures, as well as cordials. Since I mine ephemeral nodes a lot, and in order to keep my GP up fast, I use a LOT of cordials.
Also, I use my retainers to restock materials I need (like Aurum Regis sands, etc), which also can drain the ventures. (After all, I like having instance access to my materials without having to use my gil.) Those adds up quickly, so I prefer not to use my GC Seals on those materials for the sake of efficiency.
Regarding Dawnborne Aethersands:
Since when the price of those are ever stable. Why would I put up dawnborne aethersands for 40K (just to sell quickly), and only to risk having to buy them for 60K (and therefore losing 20K in profit).
The point is, with a lot of factors, demands and supplies change all the time, thus relying on "market board" for stock and efficiency is horribly gil intensive and complicated bollocks that I'd rather not go into.
Except it's completely wasteful on the gil, and the items may not always be available. Someone might buy out all the item and.. oh, well shit, you're screwed. Case in point: the marketboard in Lamia was completely devoid of every Blue Cloud Coral, which is a material used in an Alchemy Dissolvents.
Yes, everyone can do it, but everyone in their right mind would rather have fast access to their most used materials without having to risk their gil. sure, I may have multi-million gil, but I still aint gonna be crazy about my gil just for the sake of inventory space.
I still have plenty of inventory space. we're just saying that SE could find some ways to be MORE efficient about inventory spaces.
Hey, I'm glad you're just so damn proud of yourself, and you're oh so amazing ways to manage your inventory space, but I for one, am glad that I have instant, on-demand access to my materials.