Better that being rich, just being richer. At least in FUT 15.
Money buys (almost) everything and those who already have much, always wants to have more.
A good way to get rich continually is to borrow coins. Learn in this article how to do it.

How to earn Fifa 15 Coins by borrowing coins ?
There are players who need a small investment to start their fortune. Often, the only chance to start this is to borrow money. If you have many coins, you can borrow them and collect them later with interest. This interest is your gain.

Here is what you should do to earn FIFA 15 Ultimate Team coins by charging interest:
Step 1 – Find:The first step is to find someone you trust that are interested in a loan
Step 2 – Borrow:Borrow the agreed FUT 13 coins. You can do this by placing a card in the auction market.
Step 3 – Get the Coins:At the end of the agreed period for the loan, request a refund of the amount borrowed plus interest.

To apply this method, you will need to have many coins that you don’t need for some time. This is a requirement difficult to fulfill.Even more difficult is to find someone of much confidence who can borrow coins.Fulfilled these two premises, the method may prove to be highly advantageous.
You do not have to waste time looking for the market, it is very simple and generally well paid.