I list prices only for services that I am fairly certain cannot be 'value price' and are competitively priced. I will also submit range prices for some services to give customers an idea of the top and lower end with a description of a basic (low end) option and an advance (high end) option.
I never want to have a price list for services. I think the pricing is highly dependent upon the type of job and other such things and shouldn't be set prior to getting some business. But unfortunately most of the customers ask for it and some even frown when i couldn't show one.
I have a price list that's actually on my website! But it's for the basic services of doing video! So I usually just charge by the seconds and mins! But if the customer wanted more then It will be more!