There is a wide variety for shops in monster hunter, the most common of them are the Provision Stockpile, the Smithy, and the General Store. There are also traveling merchants that appear on occasion offering an assortment of items. Below you will find lists of items you can find at the various stores.
The Provision Stockpile. The Provision Stockpile appears in almost all cities, towns, and villages. Typically found within a guild hall and run by a guild receptionist. Characters that do not belong to the hunter's guild cannot purchase from the Provision Stockpile.
The General Store. The General Store has all your basic lifestyle and hunter needs. Here you will find a variety of items, tools, and trinkets any person may use in their life along with a few standard items for hunting.
The Smithy. A workshop designed to answer all equipment-related needs, the Smithy may be the most vital of facilities for any hunter. At the Smithy, hunters can not only purchase new weapons and armor, but they can upgrade their existing weapons and armor, allowing them to place additional creature materials into them. The Smithy also acts as a standard blacksmith for those around the town, providing them with items for everyday use.
The Ammo Vendor. An ammo vendor may be located in a general store, near a blacksmith, or perhaps they have their own shop. A store may have a large supply of ammunition types or just a few of your DMs choice.
Traveling Merchants. Traveling Merchants are vendors who randomly visit towns for one day before heading off to their next destination. Their inventory is an assortment of random items, typically between 5-10 items. These can range from typical general store items to rarer monster materials. When a traveling merchant arrives it is up to the GM to determine what they might be selling.