Paradigm whole studio system


There is a guy near me in Fresno selling his whole Paradigm studio speaker system.
What should I look for in purchasing used speakers?
Thanks
rwwrrr
Just look for obvious external damage of the drivers and cabinets. Listen to them. If they look and sound fine, then they are okay. See if the seller has original box, manual or receipt. I like to know how old they are.
studio v1 , v2 , v3 , v4 or v5