What is this card worth

// Adventure: a creature and a spell on one card, nothing on the back Scavenger Regent // Exude Toxin TDM 90 $0.51 - 0.59 // Adventure: a creature and a spell on one card, nothing on the back Scavenger Regent // Exude Toxin PTDM 90p $0.55 - 0.58 Promo Pack Turn the card over Scavenger Regent // Exude Toxin TDM 379 $0.87 - 1.49 Borderless // Adventure: a creature and a spell on one card, nothing on the back Scavenger Regent // Exude Toxin PTDM 90s $3 Prerelease