I hear ya!
I just bought what I thought in my naivety was a bargain 400 at £900, but my god it needs some work!!
My advice being new to this is spend a bit more and make sure all the bits are there! mines cost me way more than I expected at this stage!
The specialist honda tools alone will set you back close to £100 to remove the clutch, wheel hub retainers etc etc, then there's things like worn cams and cranks due to high mileage, it soons adds up!
Seems like a nice bike though.
Andy