I've noticed that once I sell an item to an npc merchant it sits in torturous limbo for all eternity. Are there any mods that cause items to be sold off at some point?

Not quite sure what you mean by "limbo", but when you sell an item to a merchant, it goes into their inventory and you can buy it back if you want.

Do you want a mod that resets their inventory to default after a certain amount of time?

What's wrong with being able to get your stuff back...

Yes, that is exactly what I meant . It seemed strange to me that the sold items never leave their inventories as would be expected. Realistically they would sell the items to somebody else. Do you know off any such mod?

Not necessarily. Not every single item, that's just not realistic at all.
Especially if the items in question are rare, or one of a kind. Why would they be so eager to get rid of their new found collections, and why would you be so eager to browse through their reset, average inventories?

I shudder at the thought of using such a mod. There was a time early in my Morrowind days where I never kept anything. I sold whatever I didnt use. As time went on, I started to become more of a pack rat so to speak. I spent HOURS going back to every shop I ever visited and re-buying items I never should have sold.

Ehem, back on topic though, I think the closest mod to doing such a thing would be what Pluto said, a mod that forces an inventory reset after a certain amount of time. Perhaps a search would turn up something.

would seem normal for nobody to be buying some stuff, i mean who in seyda neen wants 6thhouse cups! or something that might be add in a mod? pokeballs for sale at balmora.. seems odd.

I don't think such a mod exists, and I am really not sure if that's even possible. At least not in any way that would be easily implemented and created.
Normal scripting can't reset this type of stuff (as far as I am aware) but MWSE might have a trick up its sleeve.

You make a good point. And somehow I think that a dynamic inventory "shuffler?" that only got rid of some items and exemplified their discrimination of an items value would probably require a script extender. It's just that over time some merchants will accumulate such a collection of stock items (deadric weapons especially) that it seems ridiculous for them to keep all of it, especially if they specialize in that kind of item. In order for them to make a profit they would have to be mainly concerned with buying items that they would later sell for a greater price.

Now what I'd be interested in is a economy mod. So items buying high at some NPC stalls, and selling low at sources. Like for example, the farms around the Ascadian Isles area would sell crops cheap, but in built up towns or cities away from sources they'd buy for more. Not sure if that's possible though. If it was it'd lend real value to merchant / trader characters which don't actually exist at the moment.

Either way, I'd settle for a mod that restocked parts of the inventory - rarer items shouldn't be garunteed to be restocked, but low grade weapons/armour (Chitin and stuff) along with food and misc items should be. Is there a mod for that out?

Pirate Lord's economy mods seem to be the closest.

Not even close. That mod does the exact opposite of what you wanted.

Merchants all have finite stock, and any new stock they get will be different from their default.

You could make trader npcs Respawnable in CS, and kill them from time to time, then just wait for a respawn. ^^

Ain't hard at all. Place the item you want respawnign in a container, set ownership to shopkeeper and enable respawning for that container. Thus the items in the chests would respawn after a while. :whistling:

That's a good idea, but it won't cause items which are sold to the merchant to disappear since they end up in the merchants inventory.

Which, http://www.gamesas.com/index.php?/topic/1112521-items-one-sells-to-merchants/page__view__findpost__p__16319281, I don't think is possible.

Alas, you are correct :violin:

Hmmm... maybey when one of the engine rewrites is complete... :spotted owl:

The idea about containers was not addressed to you, since I didn't quote your post right before it.
What was meant for you, was about setting npcs respawnable and killing them from time to time. Maybe it is even possible, to add a script, that would kill all specified npcs.

can't you just add a script to a merchant which after, say a week, the script places a new merchant, and disables/setdeletes the old? that usually resets an npc.
or if that doesn't work, for it to kill and resurrect the npc.

well, you would need quite many npcs to accumulate new merchant after several weeks. either disabled or deleted objects disappear from the game and cant be brought back. oO :whistling: