Did I Just Avoid A Scam?

I'm not sure if I dodged a bullet or not. Half of it feels like it is, and the other half feels legit. All the slabs are real and in the PSA database and I reverse image searched on google and it looks like a legit photo (there are 6 other photos on the post). But anyone who collects Pokemon knows that this price is way too good to be true... right? Btw not nervous about if they're real, I'm nervous about shipping scams and not being able to get my money back

(Is this deal salvageable? Am I a dumbass? Should I keep trying for the deal? Were my instincts right? Someone w more experience please help!!)