Where I live photographers like you are able to sell such things at a decent price because there is tourism. There are lots of places to find beautiful artwork of the natural surroundings for sale, and the visitors buy them to take home and remember the Great Smoky Mountain National Park. Perhaps you can look around where you live and find a way to market to the visitors who come to see the beauty you photograph?
Also, because there are many talented artists and craftsman in this area of the Appalachian mountains, there is a crafter's guild of sorts, I believe. Maybe you can find such a group in your region?
Your work is certainly beautiful and you have quality to sell. Keep looking and you will find your market niche.