GTG's shop in AD: Foundations Tech Demo, design board. Jelly returns.
Almost a year after the menu pages were added, they were revamped in order to take advantage of the higher resolution of the game. The shop GUI was modified to look a bit more 'colorful', and to actually show an item description instead of requiring a keypress to switch between your inventory / compare screens. The former is used for selling items, and there's now a separate tab for that. Only things now on the right is item information, what characters can use that item, and how many is in their inventory, as well as their carrying capacity.
There has been debate between the team regarding item information; the one used in the base game only shows charge / recoil with three speed values, apparently damage is irrelevant on their end because I don't know. Might be informative enough for action RPGs when you're sending so many attacks their way you don't need to know exact values, but in a turn-based RPG, each of your moves count, and a couple of mistakes almost certainly ends with a party wipe, sending you back to your last save (although I've heard the game would be a bit more forgiving than this).
For the latter, the comparison feature was removed. In other RPG games a simple up/down was used since the only main feature of weapons and armor is increased attack / defense later in the game. But there's really no way to determine if certain effects are better or not, since average damage does not increase significantly over the course of the game. It's the player's job to determine those tradeoffs.
Inventory space is not really an issue anymore, since it is set to an arbitrarily high value (such as 1000), and item usage in battle is limited to what your party can hold, so you can only bring a handful of items with you into battle.
Item Description: Four lines should be enough to display stuff about the item. Maybe not enough for witty humor, however. (The description itself may change since it breaks the fourth wall and makes a reference to the fact that Jelly could be bought in only two colors when it was listed in the Etsy store seven months ago, despite screenshots showing them in other colors. I attempted to buy them via other means, without success.)