By taking a little bit of time before making your coin trades and purchases you can quickly analyze which exchanges would be the cheapest for you to buy or trade Bitcoin or Altcoins.
Not all coins are traded for the same price on all exchanges, and not all coins on the same exchange are traded at the same $USD rate between each type of currency. Sometimes its cheaper to buy something with BTC than it is with LTC or ETH or vice versa. Be on the lookout for these types of buying opportunities AltCoinArmy!
Sometimes Buying Low and selling High means you have to move your money around to maximize your gains.