How do I know if some altcoin is overvalued. Can currencies be more valued than platforms than tokens? Are they valued after how much they are used in real life?
That would be the pumped coin with artificial money being invested into it! Take example of the BCC who turned out to be overvalued after they put huge amount of money into it and valued it more than it could have been. So yes there could be coins like that in the market but they dont exist for longer than enough.
Mostly such coins are
tend to get scammed and thus they see the exit for themselves very early.