Here is the link to a FZR message group.
http://www.fzrarchives.com/
They'd be your best bet on what to look for and what you should expect to pay.
Just about every make and model of bike has a dedicated following and people who love to answer questions about their specific bike.
And they usually have a huge classified section of stuff for sale too. Bikes, parts, manuals and accessories
Check it out.