I bought Warcraft III twice, one at $60 new (preordered), Battle Chest for $40.
once while I played it on a computer with lower than minimum requirements, it was so unplayable, and super lagged, played on less than 5 fps, and another time again, then sold it to a classmate for $40 (pretty mint). Then a couple months ago. I actually got to play it, and it wasn't as fun as I thought StarCraft was, or Diablo series mixed together. I thought the idea of a unit having hero abilities were cool, but mostly jerks play it, people who kick you off games for downloading new maps, and the map selection is poor. I just never got the feel of it. I just maybe had a bad experience maybe.. The reviews I read for it were mostly positive ones, the negative ones were very negative, but were few. The demo did make the game seem interesting though, but multiplayer for me was subpar, Age of Mythology was better, IMO.