Why are the rarities (buttons on the right side) randomly assigned to the producers (left side via sell button)?
In addition, it is not clear for which of the producers the rarity levels are changed.
Then there should be more tooltips, not only the rarity level for the producers, but also the stock and speed button (an explanation would be nice).
You could hide a story in the tooltips, or above / below them like in DecisionProblem Paper clips, a text box that tells a story bit by bit.
Otherwise the game is okay
Translated with DeepL.com (free version)