This card is another staple reprint in Core Set 2021, this time from Fate Reforged. Ugin has been priced at around $40 for an original print, which means that the reprint's normal price should be somewhere around $20 — or even less.
The current price is high because of the hype surrounding the card. Everyone wants to play Ugin, the Spirit Dragon in their standard ramp deck, but a decline in price is inevitable.
So expect Ugin, the Spirit Dragon to eventually end up at around the $15-$20 range.