Finished second bi-weekly clean for this storefront, a high end furniture store/bakery & cafe. My first repeat storefront account. I hemmed and hawwed all day whether to charge $70 or $80 for the month... ended up charging $70 and the boss calls and asks me to clean her house glass. I knew it was likely to happen, that's why I kept the price low. Just led to another $250 next week for interior window cleaning.
Pick your battles boys. Win the war.