What is this card worth

// Adventure: a creature and a spell on one card, nothing on the back Silverflame Squire // On Alert PLST ELD-31 $0.30 The List // Adventure: a creature and a spell on one card, nothing on the back Silverflame Squire // On Alert PRM PRM 78834 No price yet // Adventure: a creature and a spell on one card, nothing on the back Silverflame Squire // On Alert ELD 31 $0.12 - 0.17 // Adventure: a creature and a spell on one card, nothing on the back Silverflame Squire // On Alert ELD 279 $0.21 - 0.25 Showcase Booster Fun