My gas bill. Paying them electronically involves a third-party, which charges a fee. It's easier for me to simply write a check. That's 12 checks a year. The s

My gas bill. Paying them electronically involves a third-party, which charges a fee. It's easier for me to simply write a check. That's 12 checks a year. The same goes for my real estate taxes, which have a 2.2% convenience fee, as well as a transaction fee. That's four checks a year.