In general, when looking at power level, I considered the overall game plan, the synergy of the 99 with that game plan, things like interaction, ramp, mana base and card draw, the commander, and the power of the remaining stand-alone cards
At first, Pikachu cards were regularly selling for $80, which is a solid profit depending on the initial time and price sink, but the market has now become oversaturated with people trying to sell them and value seems to be decreasing every day
Qala, Ajani's Pridemate I'm guessing the existence of Qala, Ajani's Pridemate is poking fun at the fact that there's a subset of people who absolutely love Ajani's Pridemate
Electrode [1999-2000] #21 Pokemon Base Set Keep track of your collection value over time