Wow 120 miles in a day is pretty fast truckin for a house move. That far would be uncommon around here. 30 years ago maybe but still a 60 mile move was pretty big back then. Even then 60 miles would have taken several nights to move with traffic and obstacles but was done. One of the biggest obstacles is big old trees in older neighborhoods no one wants the limbs or trees cut; doesn't look like you have those headaches.
Cool pics. It brings back memories. My dad had a house moving business and its amazing stuff sometimes. No doubt they have done thier homework and gotten most of the headaches out of the way. Helps to repeat loadings with similar layouts, set location, and preperations. $6000 today is still dang cheap mobilizing that kind of equipment, coordination, planning, paying the crew, liability etc etc. I want to say that was the price or somewhere around that for a ~15-30 mile move back in the late 70's. But there is more labor in picking up an existing previously lived in home (and not built with intention of moving) on a homesite so not quite apples to apples comparison.
Congrats on the new house.