The market is an essential element of the game, but using the market is neither fluent nor fun.
I try to make some suggestions to the UI keeping the current concept of market, but seriously, this are just workarounds for an immature concept.
GUI:
For checking my sale prices in compare to other sale orders on the same market we need a "market filter" in the search ui. Setting this filter will only show buy/sales on the selected market.
This selection could also have a "closest market" option, so i can see all sales close to me if i quickly want to buy an item remotely.
The full text search needs some love, if i search for "cont L" i want to see all "containers L" and "containers XL", currently we get nothing.
By dragging items from market container into inventory the item stack can't be splittet, only a full transfere is possible. So if i puchased 200 x Container L, i would never be able to get them out of the market due to lack of inventory space. Currently I cant even sell them again, they are dead items (see 5.)
I want to see the content of a market container remotely to decide if i need a small or a big ship for transporting the items home.
As a serious trader i should be able to create a sell order for items in the market container without taking them out first. This should also be possible remotely (see 4.)
Idea No. 5 offers the posibillity of abusing the market container as an endless storage. There are different aproaches to prevent that, but this is a question of concept i dont want to touch here. Currently this is prevented by just not having the functionality an enthusiastic trader needs.