Before you came along, the only other wash in town had the opportunity to enjoy the benefits of a monopoly.
Because of the lack of competition, a monopolist “can” charge a higher price than in a more competitive market, making super normal profit.
In this case, the monopolist sat on his laurel and most likely let his place run down because no one, until you, contested the marketplace.
If the monopolist has no mortgage, then lowering price may be an effective strategy because this guy would have more staying power than you do.
You also have to consider the marketplace.
Alma and other small towns in this part of Georgia are not strong carwash markets.
For example, per capita income for the area is less than 1/2 the national average. This implies that a large portion of the population live below the poverty line.
Historically, folks living below the poverty line aren’t the most loyal of carwash customers.
Experience shows price increases tend to raise average sales per customer but typically result in an overall decline in net sales volumes.
Hope this helps.