Does it matter how much other people sold it for? Some people will have sold it for more, some for less. It's not like you can change how much you got if you find out someone else sold it for more. Some people love the game and some people hate the game as they do for any other game out there. Fair enough, you found the game horrid, but maybe the person who bought your copy will love it and be thoroughly happy with it.
Either way I'm not really sure why you would come on a Ghosts forum to discuss a game you no longer have and will no longer play. Maybe you were just bored or are secretly going to miss Ghosts and this forum.