He has started to do so but every so often we run into cheap skates who question every nickel of the bill.
One of such customers came from Amazon services who thought that fluorescent tube lighting are $5 a piece (our cost was about $11 a piece) after changing out a ballast.
He also does electrical work (went to school for it) and plumbing
If he does electrical and plumbing why not just work for someone else?