The Hunter's Lodge offers a range of specialty commodities that can assist players with their campaigns throughout the Island. Players can exchange real money for Supporter Points which they can then use to buy unfair1) advantages such as req and cigs or general fun items such as disguises. Occasionally, special items such as the Emily bundle or a Builder's Box will be introduced. These special limited edition items are usually very good value for money and completely awesome.
The Lodge has a building in each major outpost, and all of them are carefully designed to be identical. However, the one in Kittania has a large hole in the roof. See here.
However, there are many more that are sold in limited quantities. Grab 'em while you can!
This list doesn't explain what all these items are, do, cost, etc. All that information can be found in the Lodge itself! Go have a look!