Externalities - the proof is in the pudding

Some Roadside manure down here is down to $2 a bag in our district. That makes it about as cheap as the returns from milk (20 cents a kilo )The milk producers here clearly make more money out of bullsh .
No wonder the signs out
- it doesn't cost anything to produce ,-
-the supplier doesn't want it
-and the demand seems to exceed the supply especially in the city .People value the right things or so the economic rationalist priests tell us.