So say you get a one off clean, a 3 bed semi in a nice area.
From what I read on here thats gotta be a score on a regular, but you double it because its "one off " . They then ask if you can clean the insides as well, so is that then double the already doubled one off price for the outsides ?

£120 total, well done if ya feeling that brave and can sleep at night !

I've always just charged the same for ins as outs, granted it can take a bit longer and I probably am a bit slack about my pricing, but I tend to price well for the outside anyhow.
I use a fairly dry applicator and squegee with microfiber towels and scrim, don't carry a bucket around , use a spray bottle with fairy ( keeps water and drips to a minimum )