In GEM MINT 9.5 condition, the average price for a similar card is just under $3,700 but it's not the highest price ever paid, which was just shy of $32,000
This ability is great but not necessarily broken
This Venusaur design was used as a sprite for the original video game, and appeared in the official guidebook for the Pokemon TCG Game Boy Color game in 1999
If you can get Corrupted going, its easy to recover the lost life and climb to even higher life totals, effectively closing your opponent out of the game
Such a potentially powerful mechanic enforces a lot of rules in the design space of cards with it, but at the same time it allows for super unique interactions if done right
I personally don't know anyone who plays a blue deck and does not have a Rhystic Study in it, so the card really is sought-after by players and collectors alike