This may look like a fluke but may be a reality as well. Prices for sealed PC games can be random sometimes.While Warcraft 2 is indeed rare sealed, the first one is not that rare really. I paid a lot for mine though.
Both copies ended for 170$ here. Pretty impressive for warcraft older games i must say!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160589587526
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160589586483