It took basically 4 days to get walls up, roof on, windows in, etc....

One weekend we did the soil work....rented bobcat, then formed for the concrete.
That week, the concrete was done...i paid a concrete guy cause I knew the floor would be a mess if I did it.

The next weekend, we framed two walls on one day, two the next plus rafters..(me n 2 helpers)
The next weekend we roofed and did the porch roof.( me and one helper)

Took me two days working alone to drywall, wire, insulate, install woodstove

Painted last deer season when we had 75 degree days .

You can do a lot yourself, cost is dependent on what you pay to have done. And what you pay for concrete and stove. Stove can be 150 bucks for junk to 700 for a great castiron unit