7200 pounds LOL WEAKSAUCE
Do you know who Paul Dalton is? He is regarded as the best detailer in the world. He charges 10k per wash and could go wayy wayyy beyond that.
Have you ever heard of SwissVax? Search up Crystal Rock and see whos name is on it.
Also that wax that they use is Zymol Royal Glaze, which yes cost $8500, but Zymol gives them free lifetime refills on it, so depending on how many cars you detail it could pay for itself.