Not being able to buy single items from a stack on the marketward.

[Sinbios]

There's always going to be constraint. If you want to compare with Walmart, they have way more possible items to sell that the game does, not to mention hundreds of other factors that will determine what and how many ends up in which shelves. What I'm saying is work within the constraint...that's what all succesful trader does.

If an item is not profitable to sell in small quantities, then find something that is profitable...If there is a market for small quantities that the seller finds it worthwhile, then there will be sellers who's willing to break bulk. If no one wants to breakbulk, that means the bulk won't sell, supply will accumulate, and price will fall.

Supply will accumulate, and price will fall... but still nobody wants to buy a 99 stack of something they need 1 of. Even if they did, it's still a disincentive that negatively affects the liquidity of the market. And what seller wants to waste a slot listing a 99 stack of something so cheap as to be worthless yet still no one would buy? Now despite the supply nobody wants to list them on the market, and that particular piece of the market stagnates. This is worse than stock exchange-like system in every way.