to show people the condition,it might be an idea to take some close up pics of the dogs on the gears as tis is the main issue with them when they get worn. good price though if it's in good nick.
the problem is if its a 2006/7 gearbox its no good unless i buy a complete clutch as well for a 6/7 mine is a 4/5
you need only change clutch centre Honda CBR1000RR CBR 1000RR Fireblade 2006-2007 Clutch centre parts inner basket | eBay