You grabbed it at an estate sale for three dollars. It's been sitting in the back of a cabinet ever since, holding a bag of rubber bands. Before you donate it or use it to prop open a door, flip it ...

When times are tough, not everyone has stocks or bonds they can liquidate. But even some seemingly unremarkable objects can have surprising resale value.

Discover more about bid size, including what it means, how it affects trading, and examples to better understand investor purchase quantities at set prices.