View Pricing Plans by Region Call 877-GET-WPCA (877-438-9722) to get personalized pricing, your rates maybe better than the online offers!!!! Choose the Plan that Meets Your Needs Market Index Rate Your price per therm changes each month based upon market price fluctuations. Most often, you’ll see lower bills in the summer and higher bills in the winter, depending on the market price. Fixed Rate Pricing The price per therm you pay is fixed or “locked in” for the contract term. Your bill changes solely based on volume of gas used. Your natural gas bill will increase or decrease each month depending on how much gas you use. Blended Rate Pricing A combination of monthly market index and/or fixed prices per therm. A portion of your gas usage is locked in at a fixed price. The remaining portion of your gas usage will follow market changes during the Choice Gas Program contract.