17″s are a popular size luckily but don’t seem to pop up too often second hand.
I paid £800 for my 26″ 2012 Five when it was a year old in near perfect condition.
Despite whats been said, the Five, especially the late 26″ versions with the tapered headtubes and 30.9mm seattubes are still hugely popular. I’d shove it up at £700 – I’d have thought you may get a bite (depending on condition) at that price. Theres a whole world of people out there running decent 26″ kit still who want a better frame to hang stuff on but don’t want the cost associated with binning perfectly good forks and wheels and having to buy 650B/29″ stuff.
Well regarded stuff keeps its value better than stuff manufacturers struggled to sell and ended up selling cheap. Orange have never suffered from that…