Kevin,

If your like me, a smaller company, every job is important. I will usually charge $7.00 a square foot for polish and add a $1.00 per square foot if they want color. The edge work is usually done by hand, a minimum of 2 passes, 100-400 grit to blend with the rest of the floor. Corners we bring all the way to polish by hand. The big machines usually get about an inch from the walls on a straight line. The sealing of the floor will tie it all together. The larger jobs we price lower per square the smaller higher. Price also varies with how busy we are. If your busy, charge more. If your slow,  drop price and get to work. Good luck.

Ron