While TCG Mid has been floating at around $1,200 for more than a week now, if you actually look on TCGplayer , you'll find a bunch of heavily played copies in the $650 range and moderately played copies at around $800
It varies from card to card, but here are some of the factors that influence the value of Japanese Pokmon cards, as well as some examples of direct price comparisons
Careful Study Despite not having flashback, Careful Study is an excellent way to draw 2 and discard 2 for just 1 mana
Its a fine card, but dont be too picky
Combine that with the Bodyguard ability of Hercules, True Hero - which forces challenging opponents to target the card - and you have an effective way of controlling where your opponents attacks will land as you build up your lore
All you need to do is hit play