Like the other guys said - best to get 25 tokens for $20. I use about 8 tokens cleaning my car and as long as you're coming back some time in the future, you have 5 extra free tokens that you can use later.
You choose "power wash" first to rinse dirt then "foaming brush" and then power wash again to rinse. I usually use 7 tokens but im fast, you can add time before its run out it will give you extra time to complete your action!!!
It depends how much time you spend cleaning your car but usually about 10 tokens gives you about 10 min with the machine read all the options before you out your tokens in. Then at the token dispenser there is a chart of oh much tokens you get per dollars usually 20 is the best deal since you get 5 free and you can save the rest for later
It's $2 or tokens min to get started, but get $20 dollars in token's you get $25 so that's your best choice.
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