What is this card worth

// Adventure: a creature and a spell on one card, nothing on the back Lindblum, Industrial Regency // Mage Siege PFIN 285s $8 Prerelease // Adventure: a creature and a spell on one card, nothing on the back Lindblum, Industrial Regency // Mage Siege FIN 285 $2 - 3 // Adventure: a creature and a spell on one card, nothing on the back Lindblum, Industrial Regency // Mage Siege FIN 312 $4 - 6 Borderless