Bought the land 10 years ago when economy was in the shitter and land was real cheap. But even today, you can probably find a similar lot for about $25k. The kit 10 yrs ago cost $57, and about another $40k to finish. Did all the work with help from friends and family. I mean, we did everything from clearing, grubbing, digging, pouring the footings, designing and installing the septic, electric and plumbing. The only parts I hired someone for (other than family, some which I paid) was the foundation, waterline and shingles. Hurricane Irene was coming and I ran out of time. No inspections (other than septic and wood stove) so we started staying in it as soon as it was weathertight. I think it was that Hurricane Irene weekend.
Log cabin kits are pretty easy. I never would have done it myself but my dad said it's like Lincoln Logs, just bigger, and he was right.
Taxes are high in NH, but it's 90 minutes form Lowell.