Went thru the same exercise with SPH. I have a place in Sea Pines (Hilton Head Island). In 2009 my contracted rate was $2.60/gal. Called for a refill and was quoted the 2010 rate of $5.20/gal. Told them I'd get back to them, called around, determined what the best competitive rate was, called SPH back, laid out what I expected them today, they got back to me and matched the best price. So, for 15-20 minutes of time, got SPH to come down to market pricing.
Look, there are companies that take the approach that if you, as the consumer, aren't concerned enough with the cost, then there isn't pain or motivation to change. Comcast cable has done this for years, as do a number of vendors that have traditionally enjoyed a monopolistic market. This isn't a unique approach created by SPH, just one that they have deployed. Have you compared your natural gas provider's price per cubic foot or therm? I guarantee you will be shocked at the spread. It's just business.