I would like hot water
But I ain't paying thousands and then £80 a month running costs to get it
You can have a few extra holidays instead
Or an Italian suit or two
Or a home cinema system
The list is endless
They are all more exciting as well 
I think the things that should be considered are
How much more can I earn using hot water ?
How much time can I save ?
How much easier is my working day going to be using hot water ?
How much can I save in chemicals that arnt needed as often when using hot ?
There are many more questions that could be posed but these ones do make quite a difference I would never go back to cold water £80 a week isn’t cheap I admit but it pays for its self with more productiverty , less time per job , better finish , easier hose handling in cold months, less chemicals needed many times none needed at all , first cleans or infrequent work much quicker , so all in all I think it’s good value for money , untill you have used hot , I don’t mean a tank full of warm water either when you use it every day you will notice a big difference, I understand some cannot afford it or don’t want to pay for it that’s fair enough , just try washing your dishes with cold water , it’s exactly the same as cleaning windows much quicker especially if you are near the coast with salt etc , I wish I had swapped over long before I did best move I have made since going wfp