Yueshi worth?

Hi, I’ve been playing DA since 2022. My best dragon is currently a Nadaler with 2 mut potions used on it, I believe it’s fully grown? Anyway I saw someone saying it would be around 250k worth, and I am not sure how much a NM Yueshi is worth was I’d like to trade for one. Or is selling the Nadaler in the underworld a better option and then searching for a Yueshi?