Others might be a little more obscure, or less MTG-focused, but either way there are plenty of avenues to turn your cards into cash
I'm quibbling this high up the list
Even for a relatively simple and un-interactive effect like self-mill, there are a dizzying number of ways to achieve it and all sorts of secondary considerations which might sway you towards one solution over another
In the Philippines, its popular among Pokmon collectors looking for standout premium singles
In combination with Klauth, the Despot can be a very strong combo-card, but the cost of this card, 5RR, can be a deterrent if you dont cast it from a mana ability
Shahrazad ($450) - Using Shahrazad creates an entire subgame, forcing players to leave the first game and play a side one using the cards in their libraries or decks