The price of the card will highly depends on continued viability in Standard (or Modern)
No matter how bleak the situation, as long as you have enough Hit Points and enough time to stumble through the Level Goal, hit the superweapon's tiny Weak Spot, or set off some arcane victory condition, most video games will happily let all your troubles melt away with the victory screen
Pokemon rarely releases their cooler merch in the US, but I've always been able to get what I've been looking for through here
Make sure you have a backup plan for getting rid of Nibiru s token, and keep in mind that tokens cannot be banished face-down
Thats not bad, but its also not particularly good
Watch Out for Fakes Value attracts counterfeits, and the 1999 Base Set Charizard is the single most faked Pokmon card, so a "valuable" old card is worth nothing if it is fake