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 converted mana cost X or less, put it onto the battlefield, then shuffle your library.
Near Mint - $7.00
Lightly Played - $6.50
Moderately Played - $5.50
Heavily Played - $4.25
Damaged - $3.50
Near Mint Non-English - $7.00
Lightly Played Non-English - $6.50
Moderately Played Non-English - $5.50
Heavily Played Non-English - $4.25
Damaged Non-English - $3.50
Foil Prices
Near Mint Foil - $14.25
Lightly Played Foil - $13.75
Moderately Played Foil - $11.50
Heavily Played Foil - $8.75
Damaged Foil - $7.25
Near Mint Foil Non-English - $14.25
Lightly Played Foil Non-English - $13.75
Moderately Played Foil Non-English - $11.50
Heavily Played Foil Non-English - $8.75
Damaged Foil Non-English - $7.25