Condition is a huge factor for this card, as most MP or worse copies will max out at $250, while near-mint copies can command anywhere between $350 to $500, depending on how good the condition is, as a highly-graded copy sells for more than $500
The fact it turns into essentially a Blightsteel Colossus on the other side is so hilariously irrelevant in most games that it speaks to how powerful that front side actually is
I like that this construct grows fast and is a flexible mana sink
This means that you dont need to bring a deck with you to play, but instead play with cards that are opened at the event
But these effects change that, giving you a powerful source of damage your opponents will struggle to race, plus combo opportunities with Exquisite Blood and Bloodthirsty Conqueror
Also, if there is anything specific about buying collections that you want to have covered, let me know, and I'll do my best to accommodate