It pretty much is. I guess that this puts them in the 50$ per hour considering ordering, building and shipping. Considering they give you the instructions to diy it sounds pretty fair. They know they wont sell thousands of copies so they don’t have bulk pricing on components. How much do you charge per hour for your work?
Yes it is. It’s not some unobtainable solution like you need to give 1/10 of your pay or giving away your freedom. It’s easy, free and almost painless solution that will solve your problems. You can’t try to cure your lung cancer and continue smoking.