well lets see here
all oem
bearings $12.oo per side
gasket set with seals $40.oo
pistons average $50.oo
$350.oo for labor includes porting and return shipping
$75.oo for a good used cylinder if needed
$100.oo for a good used crank if needed
so if the saw is in good shape, your in for around $500.oo