Meh, I only need it to last a month. To me, avoiding a month of cold showers is worth $114.
You weren't kidding about low cost, low tech. Looks like it'll do the job you want anyway. I put in a tankless about 3 years ago and am very happy. I had propane to the furnace about 12 feet away, so running the pipe and the vent wasn't much work. Saves elec too.
Enjoy!
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