You and target player exchange control of the creature you each control with the highest converted mana cost. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest cost, their controller chooses one of them.
Near Mint - $17.500
Lightly Played - $14.000
Moderately Played - $12.300
Heavily Played - $10.500
Damaged - $8.800
Near Mint Spanish - $17.500
Lightly Played Spanish - $14.000
Moderately Played Spanish - $12.300
Heavily Played Spanish - $10.500
Damaged Spanish - $8.800