They're high, but Lotuses and the other P9 cards haven't moved terribly much in the last couple years. By that I mean less than a 100% increase. The dual lands, especially blue duals, have all shot up by 100-300% in the last couple years, but they seem to be nearing a ceiling, especially as Modern slowly takes hold and newer players don't feel the need to get into Legacy or Vintage. Even alpha cards are less than what might be expected compared to Unlimited or Revised prices for the same cards. The utility versus pure collector value mediates things somewhat. All this pales compared to sportscards, though. To get into the same realm as something like a Lebron James Exquisite RC, you need to go pretty deep into MTG, like a Summer Magic Underground Sea. There has only been a tiny handful of known MTG sales of 5 figures for a single card, which is not uncommon with sports.