From what I read in your original post and following replies I believe when you have more experience on the glass your pricing and work efficacy will increase.
If I can make a suggestion to you take the time asap to learn to use your pole, it will save you a lot of time on storefront work.
Your first time clean price seemed with in reason but your maintenance clean price was way high and your job time scope is off, I believe that is/was because of your skill level.
Also you need to remember to do the job your paid to do, don’t leave the glass unclean (some tape etc needed to be removed.)
If I can answer any questions let me know, just tag me in a post that you have questions in (@ wcs).
Good tools and quality practice and new rubber make a big difference.
Good luck out there.