should I sell now or will it rise soon?
Wait some more. I am doing the exact same thing. Right now there Is still a surplus of Cappa and King. Wait for the cards to become rarer. They could potentially reached 600k or higher.
It'll be hard to know if his price moves much. 2 free options.. legends ty law and Calvin Johnson from the zero chill field pass as a possibility. Both have zero ap options as well.
If it gets around 450k or higher, I’d probably sell. I can’t imagine people really wanting the card unless they use a theme team.
Mike Williams skryrocketted in price after he was out of packs (he was 900k at that point). After that he has slowly crept down. After these left packs, they only went to 450-480k. Desmond King won’t have much demand strictly because of his height. However, he can’t go much lower than this, so I’d hold him for now.