tcgplayer phantasmal flames booster box Pokemon Mega Evolution: Build & Battle Pokemon Mega Evolution Phantasmal Flames Elite Trainer 10 Box CaseProduct Summary Pokémon TCG: Phantasmal Flames Pull
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USPS Signature Confirmation at cost will also apply to orders exceeding $200

As you pointed out, the difference between Pokmon EX and Pokmon GX is that the former ones are always Basic whereas the latter ones are always the stage they are supposed to be [1] (except for Tag Team GX cards which are also always Basic)
If you're looking to seriously expand your Pokmon card collection, a booster box is one of the best ways to do it

1 Mortify

If youve ever wondered how to know which Pokmon cards are worth money, heres what you need to look for when figuring out if your cards got some serious value: Rarity : Cards that were released in limited editions, as promos, or part of special sets tend to hold more value
