IANAL, however my whole family is. I doubt they could do that. People are often afraid of such fine print gotcha's but would almost always would not stand up i

IANAL, however my whole family is. I doubt they could do that. People are often afraid of such fine print gotcha's but would almost always would not stand up in court. Contracts are assumed to be "In good faith, and neither for nor against any particular side". Meaning having a clause like 'oh yeah, in addition to your yearly fee of $10, we can also charge you any unlimited amount and you agree to pay' This would be easily deemed as not in good faith and completely in favor of them (as no sane person would agree to that). Hence judge would throw it out - which may or may not invalidate the entire contract depending on how shady the judge thought they were being.