Well pricing is a fickle mistress. Too low and you attract the bargain hunters, who rarely become regulars because they are always looking for the cheapest price. Too high and you price yourself out of the market.
Have you done a true cost analysis of how much each wash/wax, or detail costs you? What I did was this (bear in mind I am extremely anal retentive and I pinch pennies so hard Lincoln screams for mercy)
1. Weigh every single product you will use with a 1oz scale. Write that down.
2. Estimate as close as possible how many washes, details,etc each brush, pad, mitt, applictor, etc will last you before you have to replace them.
3. How far are you willing to travel to do a detail, wash, wax. Remember time spent traveling to and from a customer is "on the clock" time however you aren't being paid for it.
4. What is your time worth to you in dollars per hour? NOT how much CAN I chare, SHOULD I charge. What is YOUR time worth to you. Be realistic but don't shortchange yourself.
Perform a wash on your own car with the same exactness, attention to detail, and work ethic you would use on a customers car. Then again weigh the amount of product you used. Take all your products and divide the #of ounces by the cost to reach a true cost per ounce to replace. Then I add 50% to that number. For example if M105 costs me .40 cents per oz. I make my cost .60 cents. If I use 2 oz on avg per car my cost for m105 is 1.20.
Add it all up and then you have covered product cost and restocking fee.
This is the only way to truly know your costs for materials. Now you have taxes, insurance, maintenance, and a slew of other things to think about. Break them all down into the smallest fraction possible.
When I did this I found washing/waxing just wasn't TO ME personally what I wanted to do. I am not mobile though. I made the personal choice to only offer wash/wax maintenance to customers who have already paid for at minimum a 1 step polish. Now did I eliminate potential revenue streams? Yes. However, my time at home is more valuable to me than driving out to do a wash for a potential non repeat customer. So I changed my business model to suit my personal wants/needs.
I charge $75 for a maintenance wash/wax AND I have a 2 car minimum. However, my customers are regulars, they know me, and I every other wash/wax I'll throw in a freebee. Right before love bug season here in FL I ordered some 4oz little mist spray bottles, threw a little HD final touch in them, and gave them to my regulars to help protect their finish whenever they noticed some love bugs/bird bombs on their car. All of them were happy and some were ecstatic. I told them to just keep it handy with a wash or Terry cloth.
This cost me about 3 dollars per. A small price to pay for me to further my relationship with my regulars and really drive the point home I care about their cars appearance.