You do realise that... by default all items have no purchase limits. Which is predictable. So you're saying that the game and all the mods are already boring + no mystery + no fun? Why are you here if you hate this boring no-fun game so much lol"
You misunderstood the difference between hating and suggestion for improvement. Yes, by default items have no purchase limits. Some mods has change that by completely removing the item which can be purchased at all, with monthly random availability though events. If the same can be done through events, why not item availability limits? No, not all the mods are boring. Some mods are fun to play, just perhaps you never played them, or heard about them.
For such a feature to be practical, you'd need UI with sliders, like the one xcomapoc has. It would be too much work trying to replicate that UI. Also, that UI would only work well if ALL the items had their limits and market info set. So it would also be incompatible with all the existing mods.
A UI is not necessary to make such a feature possible. Old fashion modding can do it. You need to set a hard min and max limit availability in the rul files. The amount is available in between the limits set. When the player purchase the items, it doesn't have to show how much is available. Once the purchase limit is reach, a message will pop up saying it runs out of inventory. From the paragraph you wrote, this begs of another question. Have you made or published any any mods? If you have, I would like try them out.
