It is safe to say that the ban risk is non-existent for buying coins now.
We have sold billions of coins throughout the launch of FIFA 15 and NONE, thats right none of our customers have complained of a ban. You don't have to worry about losing your coins/players anymore, we really don't see any risk in buying. Stop playing with those cheap teams, and buy all the best FUT players you ever wanted like Ronaldo and Messi. We can provide you with the coins needed.
Please also note that our delivery team is also taking measures on the backend to ensure that our coin-selling accounts are not detected by EA, so we are always doing our best to protect you!