$8.96 today to fill a completely empty 20 pound tank, way less than exchanging. I've filled three this season for less than $30. 
I usually use Tractor Supply, it seems most of the them refill propane but not all. My local Hdwe is putting in a fill station now, waiting for their certification.
	
		
			
		
		
	
				
			I usually use Tractor Supply, it seems most of the them refill propane but not all. My local Hdwe is putting in a fill station now, waiting for their certification.
 
	 
 
		 
 
		
 
 
		 
 
		 
 
		 
	