Any chance of breaking that down, including purchase price?
it's a couple of years now, but..
$400 bike purchase
$300 machine work
$300 bearings and seals
$200 tyres/tubes
$140 rebuild shock
$100 plastics
$200 bars/levers/throttle/grips
$200 chain sprockets
$70 rod kit
$100 piston kit
$100 cables
$40 paint
$100 decals
$100 spokes
$100 kickstart assembly
$100 airbox boot
I painted everything myself, relaced the wheels myself after polishing the rims, rebuilt the engine with guidance from Vandy, and made a muffler from scratch.
I realise YZ125's are relatively cheap to restore, but I reckon you could more than double this figure if you just went and ordered everything from the one place without shopping around and then had someone else do all the rebuild work for you.