Kiosks? That word alone looks expensive, and kinda goofy. Do not worry though, the truth is the are both expensive and goofy, but necessary to cut costs and remove human error (and temptation?) from the equation.
Essentially replacing a human collecting and keeping track of your income the upfront cost is truly one of the best investments that can be made for any automated Car Wash out there. Only taking a few months to pay for itself, this is not a place you want to skimp on spending.