The lower bound for the price of a collectible Lego set is what you could expect when sold solely as a cheaper, slightly outmoded alternative to a new Lego set.

The lower bound for the price of a collectible Lego set is what you could expect when sold solely as a cheaper, slightly outmoded alternative to a new Lego set. That's better than baseball cards and the like, but still easily offset by the cost of storage and handling.