When Goblin Engineer enters the battlefield, you may search your library for an artifact card, put it into your graveyard, then shuffle. {R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.
Near Mint - $7.75
Lightly Played - $7.50
Moderately Played - $6.25
Heavily Played - $4.75
Damaged - $4.00
Near Mint Non-English - $7.75
Lightly Played Non-English - $7.50
Moderately Played Non-English - $6.25
Heavily Played Non-English - $4.75
Damaged Non-English - $4.00