I keep trying to order from him but he's saying there's an issue with the pGP I'm using. Where can I find his pgp and where can I also find mine? I use a Mac and GPG keychain and already have my own key and everything I just don't know how to get a copy of my public key. Any help would be appreciated!
You'd get his through his public profile and yours is generated/exported. The little "help" tab is your friend.