You may have Spark Double enter the battlefield as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary if that permanent is legendary.
Near Mint - $9.50
Near Mint Non-English - $9.50
Lightly Played - $8.60
Lightly Played Non-English - $8.60
Played - $6.70
Played Non-English - $6.70
Heavily Played - $5.70
Heavily Played Non-English - $5.70
Damaged - $4.80
Damaged Non-English - $4.80
Foil Prices
Near Mint Foil - $8.80
Near Mint Foil Non-English - $8.80
Lightly Played Foil - $8.00
Lightly Played Foil Non-English - $8.00
Played Foil - $6.20
Played Foil Non-English - $6.20
Heavily Played Foil - $5.30
Heavily Played Foil Non-English - $5.30
Damaged Foil - $4.40
Damaged Foil Non-English - $4.40