BARTERING:Unique items are in constant circulation across the continent, so if you sold something you have come to regret, you can still inquire with merchants to whom they sold said item. You may find it on the corpse of a bandit then you killed in the wilderness (who may have relieved it from a travelling noble), or you may be able to convince an NPC to sell it back to you at a higher price or make you do a task for it. Bartering thus, should be possible with all NPCs.
Note: All merchants can be persuaded, using your speech craft skill, to offer their wares in direct swap for items in your inventory, unless otherwise stated.
Types of merchants:
-Alchemist: Buys and sells alchemical ingredients and potions.
-Baker: Buys and sells bread, confectionery and some dried goods.
-Blacksmith: Buys and sells metal weapons, armour and shields, raw metals and general metal goods (such as pokers, goblets etc.). They will also shoe your horse and help with the creation of custom weaponry. Skilled Blacksmiths are able to cauterise wounds with heated metal.
-Book store owner: Buys and sells literature.
-Butcher: Sells raw, cooked and dried meats. Willing to purchase fresh raw cuts from you.
-Carpenter: Sells wooden shields and weapons, arrows, and upholstery (see Real Estate & Interior Design). Willing to buy wood and wooden items from you.
-Clothier: Buys and sells clothing, fabrics, robes and capes. Dyes clothing.
-Doctor: Buys and sells suture kits, gauze and restorative potions.
-Farmer: Found more often in villages and small settlements, farmers sell fresh fruit and veg, and raw meat. They are receptive to trading items with you.
-Fighters Guild: Buys and sells weapons, armour and shields, and assists in the creation of custom items.
-Fishmonger: Buys and sells fresh fish.
-Grocer: General food store, including fruit, veggies, nuts and some alchemical ingredients. Willing to purchase anything edible.
-General Merchant / Requisitions Officer: Buys and sells a little bit of everything and likes to move things quickly. May or may not be in collusion with the Thieves Guild. Keen to trade items with you and can be busted down on prices easier than other merchants. It is common to meet general merchants on the road.
-Inn Keeper: Buys and sells alcohol and cooked food to be consumed on the premises. Open to the idea of trading and may trade items for lodging.
-Mages guild members: Buys and sells magical scrolls. Teaches you new spells depending on your relative skills.