Bulbasaur #133 (Pokemon Mega Evolution | Pokemon Cards) prices are based on the historic sales
The letter grade typically ranges from A to D
Like most Magic: The Gathering cards, the value of Intrepid Rabbit depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Bloomburrow Tokens)
they are reliant that the amount of people into pokemon doubles, triples, or even quadruples by then, which isnt feasible
If this causes the greatest power among creatures you control to change (for example, if you control a creature with "This creature's power is equal to the number of cards in your hand"), that new power will be used to determine the cost reduction