I price isides as 1 1/2 times the outside if they don't move nets and ornaments
e.g outsides £10, then insides would be £15, total £25
If they move nets and ornaments, then same as outside
e.g outsides £10, then insides would be £10, total £20
I also give small news letter about twice a year to all customers stating all the extras that i do, like cleaning gutters, plastic cleaning, driveways, patios and inside of windows cleaning, WORKS A TREAT, ALWAYS BRINGS IN LOTS OF EXTRA WORK, and i will not charge you for that tip, unless you want to donate, ha ha
Darren