I would think about 400 is the most I would be willing to pay for a lift install. It really should only take 5 hours unless something goes wrong of course.
__________________
2004 SR5 V6 4WD
On a Journey from Stock to Built
So Far: removed running boards, Sony XAV-AX5000 receiver
Waiting Install: OME Coils, Billstein 5100s, 255/80r17 Falken Wildpeak