Biggest problem with pavers is you can not plow over them, so you would be limited to snowblowing or shoveling.... 
 How steep is your driveway? If iceing is a problem there are other ways of takeing care of ice than going thru all that expense. but with it not being paved, I assume it is hardpack now????   
  These products would not be good as they would defrost frozen hardpack and again run into the problem of tearing up a non frozen driveway..
		 
		
		
		
		
		
		
		
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