Have you ever looted a rare item and wondered how much you could possibly sell it for? TibiaBosses.com has a feature that might give you a first hint. They offer a rares pricecheck, including a graph of how prices have developed for many items. They state themselves that you should not take these prices at face value. The info they offer might be interesting to you nevertheless. Their rares pricecheck was just updated, so take a look, if you like.