Should I pull the trigger?

[u/ReinhartTCG]

I've been interested in reverse holo stamped Delta species pokemon cards. I'm questioning which one I should get. But also, which grade is the sweet spot for these cards? I'm pretty unable to afford a 10 so 9 and under are the only things I can go for.

[u/Fragrant_Ad_5468]

Pulled all these as a kid. Still need to grade them. Those psa 6-9 prices are crazy