Generally, Grease filled dies aren't worth significant prices, unless they're VERY prominent like this one...http://www.toughcoins.com/error-1.00-ike-major-filled-dies.html
Never heard of that site. It's pretty cool. Granted mine isn't as good as the one pictures there but I'm thinking it may be significant enough for a couple bucks any. But not the 200 that Ike went for.