What is this card worth

Skithiryx, the Blight Dragon MAR 22 $10 - 25 Borderless Booster Fun Skithiryx, the Blight Dragon OMB 22 No price yet Skithiryx, the Blight Dragon SLD 1562 $27 - 31 Borderless Skithiryx, the Blight Dragon MUL 147z $705 Serialized Serialized Skithiryx, the Blight Dragon MUL 82 $21 Etched Skithiryx, the Blight Dragon MUL 17 $14 - 16 Borderless Skithiryx, the Blight Dragon MUL 147 $67 Borderless Skithiryx, the Blight Dragon PLST SOM-79 $13 The List Skithiryx, the Blight Dragon 2XM 107 $13 - 16 Skithiryx, the Blight Dragon SOM 79 $13 - 62