is $4 for natural gas cheap?
Simple yes or no question. "Is $4 for natural gas cheap?".
That's the energy equivalent of $25 for a bl of oil. Or around a buck and half for gasoline.
Most people would call a gasoline at a buck and a half cheap, but the exact same price/BTU for natural gas (which can be piped directly into your house) is not cheap?
I guess truth is relative.