For starters, it is a Colorless-type Pokmon, making it instantly usable in any deck
They, just like their previous 2011 versions, represent the concept of "black and white" in this generation
Inside this premium collection, youll discover a treasure trove of Pokmon TCG goodies
The goal is to exploit something smaller and keep the 4/6 deathtoucher intact, but sacrificing Sidisi to itself and grabbing a mass reanimation effect is always a solid gameplan, too
However, if you're grading a card from your childhood collection simply for sentimental reasons and have no plans to sell, the cost and wait might not be as justifiable
Edit: Maybe the 12B is accurate, but perhaps Base accounts for like half and thats why your estimates on other sets look too high to me