Aura and Equipment spells you cast cost {X} less to cast, where X is Golden-Tail Trainer's power. Whenever Golden-Tail Trainer attacks, other modified creatures you control get +X/+X until end of turn, where X is Golden-Tail Trainer's power. (Equipment, Auras you control, and counters are modifications.)
Near Mint - $100
Lightly Played - $100
Moderately Played - $100
Heavily Played - $100
Damaged - $100
Near Mint Spanish - $100
Lightly Played Spanish - $100
Moderately Played Spanish - $100
Heavily Played Spanish - $100
Damaged Spanish - $100
Foil Prices
Near Mint Foil - $100
Lightly Played Foil - $100
Moderately Played Foil - $100
Heavily Played Foil - $100
Damaged Foil - $100
Near Mint Foil Spanish - $100
Lightly Played Foil Spanish - $100
Moderately Played Foil Spanish - $100
Heavily Played Foil Spanish - $100
Damaged Foil Spanish - $100