Put the cap on gas prices: 6 ways to save at the pump As we come out of the pandemic and pump prices climb, itâs once again time to be smart about your gas purchases. (Source: NerdWallet) By Philip Reed, NerdWallet | March 10, 2021 at 11:13 AM EST - Updated March 10 at 4:15 PM (NerdWallet) - When the price of oil spiked during the February deep freeze, I started using a gas price app and was amazed to find that the cost of fuel in my area varied by 70 cents a gallon. By purchasing the cheapest gas, I could save $8.40 each fillup and as much as $220 a year.