I have a customer that i mow for that wants me to pressure wash their home and the one behind them that they own. Both trailers. I would be using their pressure washer since i don't have one that powerful and the lady offered. What should i charge? I would be using my own gas, but their pressure washer. I have never priced out a pressure washing job. Only done it around my house. So i have no ideas what to charge. I was thinking like $150?