"N7155A" wrote in message
om...
At my airport they are currently at $2.20

My understanding/guess is:
Avgas bulk price: 1.55
Fixed cost of tank/pumps 0.15
Mark up 0.50
Total 2.20

When they buy new gas, I expect the price will go up accordingly.

If the price is going up, they have to build a cash reserve ahead of time,
so expect the price to go up for fuel that is already in the tank.