> That trick costs a bunch of money in fees though. Only if the exchange in question charges trading fees. > And If you don't like using the volume or market

> That trick costs a bunch of money in fees though. Only if the exchange in question charges trading fees. > And If you don't like using the volume or market cap, what do you use? Market depth. Looking at the order book to see how much money is bidding on/being sold for bitcoins right now. See my reply to other comments for an elaboration.