This is more tangentially related to Castle, but I think card collectors have started to notice that Castle may be the real deal (and possibly end up the best player in this year's draft class when it's all said and done) as 1 card I had been tracking (a PSA 10 grade dual Bueckers/Castle autograph) sold for full list at $2k yesterday after sitting on ebay for over 2 months. I have the same exact card, though only a PSA 9 grade. (I'm guessing Paige helps boosting the value of that card too).
But I'm holding it for the long-term! Not making the same mistakes I made as a kid. Lol