Not being funny fellas but shops are small change, I personally dont touch them although I have had a fair few.
£1 a min doesnt work out, only if you have a whole town of them, by the time you get your gear out clean them then get paid it just isnt enough to make it worth while for me anyway.
I used to have a domino's pizza they wanted it done twice a week, monday and friday at 11.30 lol
a pub I had expected me to be there at 1pm every month then after a while I had to move tropheys take net curtains down etc, bye bye. I hated cleaning the insides anyway and what happend to my free lemonade stop getting that after the first few times TIGHT GITS. a dry cleaners I did had a serouis problem of steam on the windows soon as you blade it its steamed again nightmare to detail
A clothes shop had so much stuff in the window, say no more.
I didnt mind them when starting out but now I would turn my nose up at any shop, they want it done at crap prices which you will strugle to raise. I much rather large commercial, go to one place crack on and get home down side is waiting a month or longer to get paid!!
ProPole