I think you might be over estimating gas prices. Most folks I know don't drive around looking for .22lr...they pick it up whenever they find it while out doing other stuff. That's how I got the last 1k+rounds I bought.
Now, your .07 per round will sound good to many when they figure in Internet orders and shipping charges...
This. We typically just buy when we see it ... The general rule of thumb around here for any caliber is buy 2, shoot 1 ... I don't imagine we are ever gonna run out of ammo using that philosophy ... Whoever is the last one to die in this house is gonna have a hell of a garage sale ...