Unlike the stock market, there are no official prices in the Pokmon trading cards market so successful Pokmon card trading requires some instinct for what is valuable
(Like the Gym sets, this set has great Trainers, Supporters, and Stadiums for decks running cards from this set.) Ancient Tomb Stadium that removes all weaknesses (except for Pokmon- ex and Pokmon with an owner in its name)
Cards That Are Unfun to Play Against The following cards are banned because they dont mesh with the goals of the format
Blue has counterspells, black has removal, and red has direct damage and burn, plus the Grixis commander allows a bunch of effects that let you take control of a target creature
You may want to consider insuring any shipments that include high value cards , which will cost more, but is well worth the investment in the event that your cards are damaged or lost during transit