When Gray Merchant of Asphodel enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)
Near Mint - $8.50
Lightly Played - $8.00
Moderately Played - $6.75
Heavily Played - $5.25
Damaged - $4.25
Near Mint Non-English - $8.50
Lightly Played Non-English - $8.00
Moderately Played Non-English - $6.75
Heavily Played Non-English - $5.25
Damaged Non-English - $4.25