There are a few different and complicated lines so I wont explain them here
While this price isnt to be scoffed at, it nevertheless shows that a mythic serialized card doesnt guarantee value
However the in-archetype Rookie Fur Hire can help with these cards All the Deck's removal options are targeting destruction effects (outside of the mediocre "Fandora, the Flying Furtress") making some modern boss monsters a challenge to get rid of, outside of Extra Deck options such as "Borreload Dragon", "Accesscode Talker", or using them as Link material for "Underworld Goddess of the Closed World"
Further evidence can narrow down the date range, however as of yet this is the most accurate range given all available information
Retreating Pokemon lose Special conditions and any effects from attacks
The [On Deletion] effect activates after the card moves to your trash, meeting the requirement for you to have 10 cards in your trash