It doesn't happen often, but we were cleaning some shops this morning and a guy with a posh accent explained that he's selling his house, he has the estate agent coming around later today, and that he's desperate to have his windows cleaned; inside and out. He says he understands it's short notice and adds that we could "Charge him what we liked!"
It's a big place too, swimming pool and tennis courts.
It's lovely when that happens. We charged him well and ended up with a regular clean out of it. He's moving to London and we'll clean it on a monthly basis till it's sold. I just have to e-mail him and he promised (without prompting) to pay when he received the e-mail. Not that I would take short cuts mind you.
But he's restored my faith in customers.