your buying local?
$800 is pretty steep considering they were like 1500 usd new, I wouldn't pay more than $500 used and they need to be in perfect condition
they are probably 10+ years old at this point, and aren't paradigms totl studio from that era.
I've always been a fan of canadian speakers, PSB/Paragigm always offer amazing price/performance
my advice is try to negotiate a lower price, and if you like the paradigm sound, you can pick up studio 100s v2/3/4 for around $800, they are like the 60s but with a more cohesive, full range driver array