Major factor of cards price is how rare it is and Memento is rarer than any MT cards.
About market demand - i sold Memento for 28M clintz in first time i put him in market.
I haven't sold Manon Mt or Scarlett like that in multiple times when i have put them in market for current lowest price.
Lovely to hear you oh so helpful and brilliant comments. I feel so blessed to always get your attention isolator.
Just between you and me. I'm and eternal and I have been playing this game for almost nine years. So to say it simple I know everything that is to know about collector points.
But hey you get the point
Also I'm not scared of your mediator title and you seem to think so. Because you mostly spend most of your time on little old me.