I must admit that I don't increase my prices very often at all. It alarmed me the other day when a little girl of a customer was having her 11 birthday and I remember when she was born. I've only increased the price during that period once....by a pound!! Nuts.
As I've been cleaning windows for 30 years next year, and as long as I earn a good wage I don't feel the need to increase prices too much. As someone said a lot of our custys haven't had a wage increase for 3 or 4 years.
I suppose the main reason why I don't increase the prices too much is that I turned wfp 5 years ago and my earnings nearly doubled in the first year of wfp.
So I'm happy, the custys are happy, some even force me to have more money and put their own prices up! got loads of work, so why worry. But I'm a terrible businessman lol