Having had months to roam across Fallout 76's Appalachia and collect all manner of items, your pockets, backpack or stash might be close to full. In times like these, knowing where the legendary vendor location is can come in handy.
Here's where you can find the location where legendary vendor Purveyor Murmrgh resides in Fallout 76's Appalachia.
Fallout 76 Legendary Vendor Location
Before heading towards the legendary vendor location you should ensure that you've some legendary scrip on you. Purveyor Murmrgh is one mole rat that does not deal in caps. If you're unsure how to obtain legendary scrip, just feed some of your unwanted legendary items to one of Fallout 76's legendary exchange machines, usually found in or near train stations.
When you've finally acquired some legendary scrip, make your way to the town of Berkeley Springs in the Mire region. The building you're looking for is the Berkeley Springs Station, which can be found to the southeast of the town. You can follow the train tracks that go through the town to get closer. The building, which contains the Fallout 76 legendary vendor location is easy to spot, being one of just two existing buildings and having a broken Berkely Springs Station sign on it; the other one's a small depot.
Once you've reached the building, get rid of the planks blocking the entrance and go in. There you'll find Purveyor Murmrgh's shop, which is the location where you can exchange your legendary scrip for other legendary items. Do keep in mind that items received from Fallout 76's legendary vendor are randomized.