I don't know how everyone else's gas is billed, but mine is in 100 cubic foot units. $14.196/million btu = $1.46/CCF. OUCH! My most recent bill was $0.94/CCF for the gas. I might start reading my gas meter high for the next couple of months to "pre-buy" the gas before the winter.
It was around $0.77/CCF last winter.
In my area, the transition to where it's cheaper to use electric heat is at $2.03/CCF, although probably at a lower point since 100% of the energy output of the electric heater goes towards warming the house
If natural gas gets any higher, expect high electric consumption in the US as other people make the same calculation
Yet another reason to build more nuke power plants