A flat rating for cards in this archetype is much harder than it is for the less dynamic RDW and white weenie
This five-drop planeswalker can easily defend itself with +1 to get a 2/2 Zombie, and it mills cards to stock up the graveyard faster
As an enchantment, Search for Azcanta only supplies card selection, not advantage, and with Ramunap Red the likely best deck from Day 1, Im not sure how many of this card you can afford to play
Factors like being a 1st Edition, having a holographic finish, or being competitively viable can increase value
With gray stamps, the biggest hurdle isnt merely the price, but instead actually finding the cards in the first place, and finding them in decent condition is even harder