Ours is in Ohio, actually used the Amish. We bought a barn kit, then upgraded the windows, doors, porches (small front full back with ramp). Didn't want wood exterior or the composite siding they provided, so bought separately vinyl log (no maintenance high insulation).
Total cost of our project to completion was $55K, that included 5 acres ($10K), full basement (basement as much as the shell), septic, and well', half loft. We finished the inside with bead board, two layers of insulation, laminated flooring, appliances downsized trailer size, and one loft to floor ceiling fan. HVAC, is a simple $650 motel type through wall heat pump with aux heat strip.
This is it shortly after completion.
Turned out pretty nice really. The extra insulation even in Ohio winters, it uses an amazingly small amount of heat to heat it or AC to cool it. The ramp on the back is to dolly firewood up for a wood stove. All the plumbing is in the basement including filters and drain valves to drain the entire system for prolonged empty times.
I don't have a picture of the finish product on line but this will give you an idea of the decour.
A key feature not shown is a long shank ceiling fan in front of the loft. Summer it blows down to bring heat from the loft to the lower level and reverse it in dead of summer to pull AC cold air upwards. Highest electric bill, no use of wood stove, has been $60 month. I'm not kidding. We used the reflective thin insulation on the walls then went two R factors up on state recommended and combined with the vinyl log, its amazingly stingy on temperature loss. This is well worth the extra effort. Minimal power, just enough to not freeze pipes in winter is about $12 a month.
The entire layout is backwards. The front door opens to simply a foyer where the one door is a bathroom, simple commode, cabinet sink, and shower stall. This faces the road, a dirt road off a dirt road. Go either side, it opens to the great area, kitchen to one side, living room to the other. Sleeping is a Futon downstairs to regular beds upstairs with real wood antique dresser between the two beds. Kitchen is trailer size double stainless sink, wood cabinets, trailer size refrigerator, and trailer size stove with oven. The common area opens through double french doors to the back deck which overlooks the forest below the hill.
Largest deer the family has taken was taken from the back deck.
Our second shell is up now for a second, one day cabin. That one we used a garage concept same barn roof, full loft, standard vinyl siding, only two windows for now (windows are about $200 installed from places like Lowes), just the shell, $9,800. Idea is to convert that should we need to or, I decide to retire there. The first one is my brothers. That one is a 24'x24', vinyl siding over particle board, shingle roof, garage door, one window upstairs, one window down, and one regular door. Floor is board built over a concrete slab which use to be out basketball court. Its just a shell for now, however the layout, stairs all the way back to the back, is a far better use of space than our first one. Idea is remove the garage door, put a porch in, with windows, finishing it off with the same gray vinyl. Then finish the inside using the same through wall HVAC concept. Septic and water tied into the first systems.
You can do this stuff on the cheap. What helps is getting that shell up fast so you have storage. Then you can buy material as you find it on sale and take your time finishing it off.
Tj