This has absolutely nothing to do with photography. The matter-of-fact second answer is outshone by the hasty confusion of the first.

Question: How much is a card from prison worth?

Answer: Like, if you sold a letter from someone in prison?! Nothing. Why would people want to buy a letter from a criminal?!

Answer: In a game of monopoly, depending on the house rules, around $50.

Get Out Of Jail Free Card

Get Out Of Jail Free Card

Source: Original Wiki Page