what are some prices you guys are charging for wall installs? Per sq ft, linear ft, etc. I no alot depends upon size of block, height of wall and base course. Is it a good idea to set a base course up like one does cement - being instead of leveling all the base course to form a footer and pour self-leveling cement in for desired thickness? Anything would help - I am bidding a wall that would be great for business down the road.