M1 - The Wolds
1 - Ayten
2 - Cranalt
3 - Stone circle
4 - Rond Farm
In the village of Ayten M1(1) you can find a man named Ratofer, who will ask you to sell his item to the villagers in return for a share in the profit. You can take the items on at a time or all at once. The difference is that by taking them one at a time the man will give you hints how to sale them at a slightly better price and you will be able to sell one additional artifact.
With the first item (Bag of Ratofer's Silverware), head to the nearby blacksmith shop.
Before selling it to the blacksmith, approach the forge and salvage it. You will receive 100 gold that way.
The second item might interest the local alchemist.
The third item is a pair of daggers, which a man named Fynwick Iver will happily buy.
In order to increase the price, you can place 1-2 stones in the weapon. The Sagecraft Altar can be found inside the basement of the alchemist's house.
The fourth item that you receive is a ring which might interest a woman named Singing Nell. In order to increase its value, you can clean it with the Acid Solution. It can be found in the nearby tavern. Head onto the upper floor and open the chest on the left to find the phial inside.
Use it on the rind and the woman will offer you some more gold.
The last item you can sell can be found in the Corgan Hold in Tala-Rane M2(1).
Corgan Hold map
1 - Skeleton with a note
2 - Treasury door
3 - Asters' Chest
4 - Ratofer's Charter/Treasury key
It's been hidden inside a chest in the north-west corner of the location.
After obtaining the scroll, take it to the innkeeper Gordan Lot in Ayten. Success in persuasion to receive almost double the normal price.
You can now return to Ratofer and finish the mission.