Yes, GameStop will buy your old Pokemon games, spanning back from the Pokemon RBY series to the present-day Scarlet & Violet games for the Nintendo Switch
Let's find a more lively spot!
The problem here is that while blue and black don't overlap much in actual mechanics, they have a lot of abilities that are close to the other but just a little different
If you want to increase your odds, try it in Krark, the Thumbless, or maybe the new Storm, Force of Nature, to get multiple copies of it
This article on 3 Quick & Easy Steps to Get Your Cards Graded by PSA may be beneficial
GSE Gold Secret Beelze of the Diabolic Dragons X DARK Level 8 [ DragonSynchroEffect ] ATK 3000 DEF 3000 1 DARK Tuner + 1+ non-Tuner monsters Cannot be destroyed by battle or card effects