psa grading for pokemon cards Standards - Articles PSA vs. BGS vs. CGC:
Description
I think its because pokemon go introduced new demand

Gyarados Set Base Set Identifier 1st Ed
If this Pokmon is in the Active Spot and is damaged by an opponents attack (even if it is Knocked Out), discard an Energy from the Attacking Pokmon

#8 Maybe even worth $150, keep it for awhile and it would be even more Soul Urusai Urusai Urusai #9 Looks pretty rare, definately keep it
