I have only done a few aerations, and usually just for friends, so I am not sure of how to figure an accurate quote. I can rent aerator for nothing as I have a family member at a local rental store, so that is not an issue. The lawn in question is a standard residential lot with about 6,000 sq. ft., few obstacles and a fence in rear. Customer wants quote for for 1 direction and 2 direction aeration, I suggested he have it done in both directions. I would like start doing more, just not sure how to quote and be competitive. I am located in central IN if that makes a difference. Thanks for the help.