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.
NM-Mint - $4.50
Lightly Played - $4.30
Moderately Played - $4.10
Heavily Played - $3.60
Damaged - $3.00
NM-Mint Non English - $4.50
Lightly Played Non English - $4.30
Moderately Played Non English - $4.10
Heavily Played Non English - $3.60
Damaged Non English - $3.00
Foil Prices
NM-Mint Foil - $13.00
Lightly Played Foil - $12.30
Moderately Played Foil - $11.70
Heavily Played Foil - $10.40
Damaged Foil - $8.40
NM-Mint Foil Non English - $13.00
Lightly Played Foil Non English - $12.30
Moderately Played Foil Non English - $11.70
Heavily Played Foil Non English - $10.40
Damaged Foil Non English - $8.40