I am biiding a job for a paver driveway. I need to remove 5" of existing cracked concrete(950 sq.ft.) which has rebar and heavy duty mesh. and replace with pavers. Some areas need to be raised 6" from existing concrete level due to settling. I was thinking of charging $11 per sq. foot do you think this is a fair price? Its a good customer. They called unilock and were told expect to pay $10 sq. foot with concrete removal.