I used these
NIBCO crimp rings and a die crimper for my RV. I put away the go-nogo tool after about 20 crimps, I knew it wasn't needed.
If you just have a short section of pipe to replace, you could make it up on the bench and figure out the best connectivity on the two ends.
Plumbing a smaller residence is mostly tedium rather than anything difficult, IMO. If I was closer, I bet I could beat that $7800 by a few thousand. Unless you have steam or water baseboard heat, just exchanging supplies and drains is straight forward. A guy always runs into a surprise or two along the way but it isn't monumental if the house was built to a somewhat standard layout and hasn't been extensively remodeled.
If you can get into the space you're dealing with and shoot a picture or two, you'll probably get some better advice about how to deal with the repair.
