Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
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 Non-English - $4.80
Damaged - $4.80
Foil Prices
Near Mint Foil - $19.80
Near Mint Foil Non-English - $19.80
Lightly Played Foil - $17.80
Lightly Played Foil Non-English - $17.80
Played Foil - $13.80
Played Foil Non-English - $13.80
Heavily Played Foil - $11.90
Heavily Played Foil Non-English - $11.90
Damaged Foil - $9.90
Damaged Foil Non-English - $9.90