I found a tremendous source for old west town building kits. Click on Multiverse Gaming, Old West town. They have four separate wooden building kits, for intricate old west buildings, each kit custom made in Poland, for dirt cheap! The kits run between $25 to $45 each, and take a month to be made and shipped from Poland. (The kits arrive in unpainted wood.) The buildings are about 8 inches by 8 inches.
They also have a great western accessory kits, like a working hangman's scaffold!
Apparently, there are Multiverse games (like the old Dungeons and Dragons game) that use cowboy figures and western buildings in their "universe." The gamers use these buildings in the course of the game. There are also separate models for Medievil castle games, and Future World science fiction games.
Not really what I am looking for, since I want an old ranch house and bunkhouse kit, and apparently there are LOTS of pieces to the kits that you have to glue together and then paint, but it may be the closest you can get to this type of scene. And, you just can't beat the prices.
They also make a cheap five building western town kit, but these buildings are made from panels of MDF and don't look very good at all. Not much detail at all.