The Larstown shop is the center of the VikingMUD universe. Just about every direction given when you ask for them are given to and from the shop.
You can find it s,3e,n from the Altar of Odin .
You can sell anything here, so long as it's even vaguely valuable. If what you sell is worth more than 1000 coins, you won't get any more for it, and it will be hidden away.
The Larstown shop is run by Grundlebump the gnome.