A game is set up as follows: All the diamonds are removed from a deck of cards, and these 13 cards are placed in a bag. The cards are mixed up, and then one card is chosen at random (and then replaced). The player wins according to the following rules.
If the ace is drawn, the player loses $20.
If a face card is drawn, the player wins $10.
If any other card (2–10) is drawn, the player wins $2.
How much should be charged to play this game in order for it to be fair?