Ok I just emailed a pinhead (pinball guy They call them self's pinheads)
And JohnieG knows this person I'm talking about 
He told me the going rate was About $150- $200  for not working
if it was working $500- $750 .
So I will let my client know and if anybody is interested please contact me 
and I will help get the deal done 

Sodak Bob & Ken thanks for your help.