I'm not saying it's bad or undesirable. I think they're just asking far too much from what I was able to see online. From a few years back the older Korean ones seemed to be selling for around $300.
I guess that if you really want to spend $800 on titanium saddles, go right ahead. Personally, I'd rather just get a really nice second guitar for that money.
Have you had an opportunity to play it? Is that price firm or is he willing to negotiate?
Unfortunately every time Peavey comes up, I'm reminded of my MIA Peavey Fury p-bass that I foolishly sold when I got out of grad school... sigh.