We generally use TCGPlayer.coms Market Price for most sealed product, though any specific price may be slightly lower or higher depending on a variety of factors
I have both an understanding and an opinion on damage going on the stack, for instance, whereas when I bring it up in regard to cards that used to be much better under the old rules, like Yavimaya ElderYavimaya Elder and Sakura-Tribe ElderSakura-Tribe Elder, I usually end up explaining things for a good ten minutes
As for its card in Prismatic Evolutions, prices are going crazy at the moment
Reinforced Perimeter Edges: Sturdy exterior construction engineered to resist bending under pressure
It is one of the least expensive cards on this today we have, as wild as that might sound
Refer to the official event instructions and resources page if you are running a tournament Tournaments must be at least eight players to run, and unused promos should be returned to Ravensburger