Materials are double the retail price at Home Depot. Expected a neat, professional installation..living with a sloppy one!
You should reconsider shopping at Home Depot the copper pipe and 90 degree elbows you used here are IDENTICAL to those on their shelves.
I have since hired another plumber to determine why my appliance wasn't performing properly. Ultimately, the gas hose you provided was undersized and too short. Rather than providing the proper length hose that would turn a 90 degree angle against the wall, you chose to use what you had available in your warehouse on wheels, stretching it diagonally 2 feet from the corner and leaving it awkwardly exposed to potential damage. You even questioned at the time whether it would deliver the proper flow or not (I overheard you say this to your helper). Once the hose was replaced with one of the proper diameter and length my appliance performed as expected.
Justify your pricing however you wish but there's no justifying the DIY quality of work you performed here.
fyi - it's "business sense" not "since" ,"sence" or even "cents"