Doug wrote:

Those with high prices will not want their prices to be listed. Those
with low prices are too cheap (poor) to pay to list their prices.

Not always too cheap. They just don't care because it doesn't bring in
any business. Buddy of mine owns a self serve 12,000 gallon tank at an
airport near here. He sell 100LL for $2.19 a gallon. The guy across
the ramp, who a lot of people don't like, is the FBO and has long sold
fuel. He is on very shaky financial ground and is now forced to sell
fuel at the same price. Problem is he only buys 1000 gallons at a time
and can't get as good a price from the dealer. Here at the main airport
in Billings 100LL goes for about $2.90. Most traffic will stop here at
the main airport, even though 11 miles away you can save 70 cents a gallon.