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I doubt it's many at all.It's about proportion. When you buy a house, you expect pages and pages of legal stuff. When you buy a car, there will be fewer pages but still a lot of stuff. When you buy furniture, it should all drop down to a single page. (I don't know how common this is, but the trend in my state, whenever there's a law involving mandatory disclosure, is that the law will explicitly state a minimum font size, or will say from what distance a sign needs to be readable if it's something that has to be posted.) When you spend $20 at the grocery store, there's nothing to sign except possibly the single line saying “I agree to these credit card charges”.