I don't know much about the F-Series bikes.
The bike looks clean, in nice order and low mileage of 9125 miles for a 9 year old bike.
The documentation for BMW service history is a very good thing to have as well as the MOT history.
Nice quality extras like the BMW Heated Grips, BMW Rack and Panniers.
Why is there still a Road Tax Disc dated 31/10/15 showing on the LH side?
Is it worth £3200? - only you can decide this - check out current prices in the Motorcycle News (MCN), Ebay etc so as to have a good idea of what these bikes are currently selling for before making any offer.
Don't be afraid to haggle if you find a bike you like - sellers always leave a margin for this.
Don't be too keen on a bike if the price seems low and there is no supporting documentation/history - if you buy a stolen bike you will lose your money.
If you buy on Ebay there is no Ebay Money Back Guarantee on Vehicles.
If you buy privately, take a friend with you as a witness and don't hand over payment unless the bike is present with you.
Don't do any deals in car parks, at the back of the pub etc - carry out the deal at the owners address only and check that the same name and address is shown on the vehicle registration documentation.
If something doesn't feel or look right - walk away.
Here's a 2012 Independent Review of the F800R:
http://www.roadtrooper.com/living-with- ... 1-year-on/
See what others have to say here.