Carolina Carports. They have dealers all over the country. This is one of those open carports you see everywhere, with signs advertising for like $695/795. They have many options and sizes, including garage doors and windows. I opted for 9' sidewalls, closed sidewalls, heavier gauge steel frame, mobile home anchors - total $2500 installed. I think a completely closed in building, with garage door is about $4K. I think they have options for heavier snow loads too. I put in stone pad myself. I wanted a pole barn, but could not justify the cost. This was by far the cheapest option I could find. I think the quality is quite good too. Holds a lot and accessible from both ends.
Three guys showed up at 5:00 PM. By 8:00 PM they were leaving. Man they sure worked fast, and barely said a word to one another. Like a well choreographed dance.