Only good for big trades, if you don't have a large amount of coins you will not even have a chance to be into the top 10, most of those competitions are only for those that have a lot of cash, and a few not even worth for they to try.
Agree with you, this contest is only for those who have a lot of money and can control the volume of the competition. If there is too little money then we should not waste time with it because surely we will never be able to become the winner.