Pricing is always a sore subject on here, regardless of the methods being used because clean windows are cleaned windows whichever way you want to slice it.
It always makes me laugh to myself when I speak to other shiner who try and justify why their prices are lower than others or when ones under cut just to get the job, as ultimately they are hurting themself. If Marc charges £50 whereas others are much lower and take longer then these ones would do well to question themself rather than others. Why are they working for maybe £10 less per clean? Just because in their head they can't justify it, yet evidence points contrary to it and yet they still insist or justify that their way is better.
As spock would say "it's highly illogical"