"Who's On First!"
Here's another suggestion that might clarify and hopefully advance this discussion. Bill hit the nail on the head.
Retailers have long known that it's easy to lower prices... and very tough to raise them. Instead of the seasonal yo-yo pricing, why not consider seasonal specials. I recommend them routinely to my clients and they work great. That allows you to condition the customer to look for and consider fresh new specials offered, and recognize the savings. It builds and reinforces VALUE without the risk of mere price devaluation. Instead of a 2-tier pricing program that is cumbersome and risky, offer a special instead. You have a plethora of choices: cold weather special, warm weather special, holiday special, manager's special, end-of-the-month special, national clean-up special, international shiny car month, and many, many, many more. You are only limited to your imagination... and enough combination choices.
Using merchandising specials enables you to help shift volume from busy to not-so-busy times. Want to build early morning traffic, offer a cup of coffee and a newspaper. Late afternoon traffic is a great time for take-home specials combined with the wash... such as a flower bouquet. Not very expensive, especially at the end of the day (if you source things well).
You rail at remaining inside-the-box, so step outside and get creative. Offer a kiss to every customer with every wash! You can get a great deal from Hershey's.
Seasonal things tie in well, too, Bottled cold water on a hot day. Hot cider in Autumn. Candy canes throughout December. Dog bones during the dog days of summer. Bring a little theater to your business! Lift it out of the same old stereotype carwash... and elevate it to a destination location simply because of the gimmicks. Done right, it can make your operation a lot of fun to visit... as well as talk about later.
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