Where would I buy a Silver Age Comic Book?

[Nosferatu]

Where can I get a copy online? Ideally I want a CGC copy around 6 or 7 on the scale.

 

[Ape]

For local, check PPF comics on NW corner of Military and Cherry.

Ape Out.

 

[Nosferatu]

Thanks for your reply. I'll give them a shot