If they gas is $3.05 or more in their area then they save $20. What’s so dumb about it ? Because you are spoiled to save $30 -$35?
This is ASSuming they will fill the entire 20 gallons.
Mind you, most sedans and crossovers have approx 14-16 gallon fuel tank capacity.
For 20 gallon fill-up, that’s someone with a larger SUV / Minivan on near bone-dry empty.
For a good portion of end customers, these fill-ups present a $45-ish
gross value.