There are many merchants in the Hinterlands, but most of them are supplied by Greytooth's Mercantile Emporium. It has everything that an adventurer, a homesteader, or a noble could possibly need, that isn't magic, or weapons. If you want to sell treasure or buy a pony, you do it at Greytooth's. It started as a wagon and a tent, but is now an extensive fortified campus of various specialty shops.
Greytooth is actually the family name of a clan of Orcs, all of which go by Greytooth, but they are lead by their elderly patron THE Greytooth who tends to be very shrewd when it comes to business, but is also renown for his lavish holiday festivals that tend to shut down Base Camp for days.
The Mercantile Emporium Campus is made up of the following buildings: