FWIW:
Unfortunately if you can't ask the last owners if the bearing was
changed, you have to pull the clutch basket to check.
Having said that, at 6300 miles, I'd want to find out.
$275 does not sound too high for valves, and oil change.
The oil change (frame filter, and case filter) takes me
about 1.5 hours from start to finish (I've done it 10 times on
my 2002).
Valve adjustment is easy, it's just getting all the stuff out
of the way that is time consuming.
__________________
2011 Husaberg TE 300
2002 640 LC4e
Past Rides
'03 KTM 450 EXC (SOLD)
'01 Honda XR650R (SOLD)
'98 Honda XR600R (SOLD)
'95 KTM 620 RXC (SOLD)
'88 Yamaha TT600 (SOLD)
'86 Yamaha XT 350 (SOLD)
'84 Yamaha IT465 (STOLEN)
'83 Kawasaki KDX 450 (SOLD)
'83 Honda CB1000 Custom (SOLD)
'82 Kawasaki KDX 400 (SOLD)
'77 Yamaha DT200 (SOLD)
'70 Honda CT70 (SOLD)