if your selling PA plugs for $1, tell them it really cost $20 more when you get to PA

 

Although I can totally understand your anger, finding out the transfer costs is as much your task as finding out the various minimum system requirements.
It's widely known that PA is charging $20 for this for quite some time now, which is the reason why these plugins are sold so cheap second hand. At least there's some sort of discount if you transfer several plugins, AFAIK.
However, no doubt it would've been nice by the seller to mention this.