The number of times I've seen someone advertising they're buying materials only to be laughed off because I don't have stacks of 50+ or 100+ of a rare material, or 400+(!) of common ones, just to make a trade transaction with them and get some gold so I could get myself started, when I was brand new, was atrociously high. Even now, when I'm AL 85 and able to go hunt in T5 areas solo with relative ease, I can't really participate in the player economy because I don't have the massive economic base that older players have, and it's something I've seen a few players newer than I complain about, too. It'd go a long way towards helping loosen up the economy gridlock if we could just fulfil buy orders partially; Say someone is buying 50 Beetle Carapaces for 900g each, but you only have 8. You could sell those carapaces to them for 7,200g (a HUGE sum of cash for someone still trying to get on their feet, economically) and the buy order would just tick down to 42. Someone could still come along and fulfil the remaining buy order entirely, still, as well. And if this were to be implemented, more varied orders could be made as well, as crafters will always have materials they want to buy but they won't have to make multiple orders of standardized amounts- just a lump sum of all of that type of material they're willing to purchase, at a given price. And, vice versa, instead of having to buy entire stacks of goods, people would be able to buy parts of a stack, so they can get just what they need and/or afford, while leaving extra for other people to get, instead of having to go through the process of either storing it until they eventually use it up, or re-selling it because it's more than they'll ever reasonably need, especially when they need liquid assets to get other components or items.