The prices listed do seem high, and a 20k watt is a LOT of power. I cant recall exactly, but in my last house I had a GE (Kohler) generator, I think it was a 12-15k. I bought it landed for around $3k with the whole house transfer switch from Home Depot. I spent $1400 on the electrical, a few hundred to get the trench done and bought my own 1000 gallon underground tank for $3000+/-. All in I think I was $8k, and had huge LP capacity. I was running a 4300sqft home with hydro air heat (draws a lot of power), hot tub (kept it running but wasn't using it during outages), etc.
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