The Seller - Goblin potion/coffee seller (Patreon)

The local sheriff has asked you and your party to investigate a group of goblin potion sellers who have been causing trouble in the local towns. They operate from a mobile factory, so they are hard to track down. You have been given a tip-off that one seller will be in town tonight. 

Keeping to the shadow, you listen in and around town till you hear the tell-tale sound of "hay, mac... you wanna buy some potions?"