Ahhh, such a pity this thread was forced down to the lowest common denominator by Sean an KS
Before taking up window cleaning I carried out a survey by knocking a few dozen roads in several villages, the result of this was a surprise most important, top of the list was reliability !!!!
Followed by..... Quality !!!! Oh yeah then came ( a long way behind about 1 in 15 ) price... Ta daa
On this we based our biz around the first 2 - I was never scared to price well ( but fair ) that's why a four week service is just that every 4 weeks the same day of the week every time. Or in the case of heavy rain caught up no later than 3 working days - yes that means Saturday or Sunday work.
On the above your more likely to lose custom for bad service or quality than price, my dropouts over the years have backed this up.
Vin is a great guy, and works hard at his biz, he's also passionate about ( rightly so ) some on here just can't take that, or accept points of view, I have never known vin to be rude, yet there are those who have insecurities attack him personally because they have no facts to their own argument on.
For the last 3 years we have promoted 8 wky cleans in a more positive way, I get 25 to 40% more per clean and like vin two thirds take this option - why because these people do not want a shiney rapping on the door every month, they see it as a quality service, delivered reliably at a good price.
Those who want 4 wky are also happy, cheaper clean, more often, either way I've not had a " omg you back already " for years !!
If I started again I'd do 6 and 12 week options - 4 wky is IMO outdated with wfp
Lastly - my van buying habits are my own ! -

Best regards
Darran