As you pointed out, the difference between Pokmon EX and Pokmon GX is that the former ones are always Basic whereas the latter ones are always the stage they are supposed to be [1] (except for Tag Team GX cards which are also always Basic)
Note that Bebop doesn't care about +1/+1 counters, just counters in general, so keyword counters and shield counters are useful here
Part of the celebration on the 30th, Pokmon Mega Evolution Ascended Heroes Tech Sticker Collection
For instance, while The Eternity Elevator can eventually make you a whopping 20 mana, you're going to need to be stationing it a lot to get it online
Alongside the competitive value, this card is a worthwhile gem for art collectors
So far, boxes of M25 have sold as low as $155, and are currently available around $180