How is the inventory of a spouse's shop determined?
Since I married Mjoll the Lioness recently she’s set up shop in my home and it seems like the merchandise she sells varies greatly depending her current location/actual inventory. I traded her things like dragon scales/materials and checked her shop to find those materials listed there as well.
If this is the case, I guess my real question is are the items that are listed in her store my items? and will they ever be sold or “disappear” somehow without my consent or knowledge? I really don’t want to find out that valuable items/weapons/armor I spent a long time acquiring ended up being the “deal of the week.”
Are items in my spouse’s shop mine and will they ever be sold against my will?
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If your spouse was a merchant before you married them, they will sell the same goods they would normally. If not, they will sell pawnbroker-type goods and (reportedly) loose items you leave in their inventory. They will not sell items you leave around the house.
Their inventory “refreshes” like other shopkeeper inventories, so don’t sell them something you are planning to buy back later.
From wiki: “You don’t need to worry about losing items by placing them in your spouse’s inventory because they sold them to someone. Like all merchants in the game, they will actually only sell things to you, and not other people.”