Phillip,
You need to come up with your own pricing structure that is tied to what your local market will bear, what your competitors are charging and how much you want to earn in exchange for your hard work. Whenever prices are mentioned on here there is always an element of bravado at work at the same time, 'I charge / earn more than you.' Ignore it and come up with your own prices. Having said that your prices are too low, so why not creep them up slowly. The trick, if you want to call it that is to find more people who say yes than say no, so keep a record of how many calls you get and how many convert to sales.
If you haven't got a website then you need one, pronto because your struggling could be caused by low call volumes and a desperation on your part to convert those few calls into sales with the lure low prices.
Simon