This spell costs X less to cast, where X is the total toughness of creatures you control.
Defender
2UU: Until end of turn, target creature you control gets +1/+0, gains "Whenever this creature deals combat damage to a player, draw cards equal to its toughness," and can attack as though it didn't have defender.
NM-Mint - $1.40
Lightly Played - $1.40
Moderately Played - $1.30
Heavily Played - $1.20
Damaged - $1.00
NM-Mint Non English - $1.40
Lightly Played Non English - $1.40
Moderately Played Non English - $1.30
Heavily Played Non English - $1.20
Damaged Non English - $1.00
Foil Prices
NM-Mint Foil - $1.80
Lightly Played Foil - $1.70
Moderately Played Foil - $1.60
Heavily Played Foil - $1.40
Damaged Foil - $1.20
NM-Mint Foil Non English - $1.80
Lightly Played Foil Non English - $1.70
Moderately Played Foil Non English - $1.60
Heavily Played Foil Non English - $1.40
Damaged Foil Non English - $1.20