re: How expensive is it to have natural gas installed and maintained?

When my wife and I built a couple of years ago I bought the poly pipe, couplings and risers and ran my own gas line. Atmos is out gas provider and set out meter for free being we run our tankless water heater, furnace and cooktop off of natural gas. Our bill averages $50 a month. Supplies cost me about $250 to run +/- 150 feet of line.