LP gas is made from petroleum and has a higher BTU rating per volume than natural gas, at least according to the specs I have read for back up generators. Because it is made from petroleum, its price is far more dependent on oil prices than natural gas, not that they aren't all screwing us in every possible way, and then you have delivery charges. The flames are smaller than those of natural gas in a given burner.
There is a bottled gas business up in Laurel, MD called Poist, but I don't think that they have private label appliances like Skelgas, even though they have a showroom. When I saw the name of the stove yesterday, I suspected that it was a private label product. It is a beautiful stove and yes, I was referring to the seller's comparisons of prices over $1000. I guess that in the Skelgas service area, those stoves have achieved a coveted status.