At time of writing, there are no listings for under $200, and I expect the Market Price will keep adjusting up as more sales come through
Iron wall will prevent most of their deck from functioning properly, here is a small list of cards rendered useless while Iron Wall exists on the field
The calculator uses four fields, and to translate the technical mumbo-jumbo used in the hyperlink, each field should be filled out in this order: The first field should be how many cards remain in the deck
It also allows you to find three Basic [R] Energy cards in your deck and distribute them among your Pokmon however you see fit
This includes monitoring individual card values and overall collection worth, which can change frequently in the trading card market
Then, once youve fully mastered the basic battles, you can move on to the (also included) advanced rulebook and additional Mewtwo deck