I am calculate the profit from trading altcoin using percentage. That's to say, whatever funds i put into trading even for $14 (as you mentioned), that's enough. As long as we are observant to see price movement, then we can achieve good profits.
$14 is actually good to start investing into trading with some good altcoins as holding some coins for long term can be much profitable. Some good altcoins are at a good dip for now and it can eventually rise some or the other day which can usually give huge returns and even some coins rise up by 5x to 10x which will just multiply your amount. Also $14 can give you a $100 profit if you have good patience and you are ready to invest and forget about the coin. Day trading can be profitable for fast but small profits but I won't prefer day trading with $14 so try to get some profits from that 14$ and then you can start day trading and long term trading in percentages to get you huge returns.