Trading strategy of budget 0-25000 coins (Part 2)
Trade rare kits and badges 
Looking for a silver one, because there are not many silver pack opened, you gonna look for the cool one, like U.N.A.M’s kits, they get a pretty awesome bear on their kits. Some bronze kits are valuable too, like Arsenal Tula, they get incredible stripe on their home kit. People want such kit for them club, they probably pay a ridiculous price for them. Some people don’t want to wait, so they might buy the kit for stupid price on the market and buy it now, because they don’t want to wait an hour. As traders, we will not stupid, we wait and buy such stuff 150 coins. So just wait, try make more bid, and list them for the lowest BIN. You can make a whole list of different types of kits and badges, and sell them a bit more, and watch them until them expired.

Trading with consumables
You can sometimes get really lucky and really get some money through trading consumables. You can trade some chemistry style, contract, squad fitness and position card. Whatever you trade. You can also do with staff as well, so you can do it with good managers and good coaches. You just have to search in the market and find out what price those price are, and trying buy them for less than their BIN price, so you can sell them with BIN.
Generally, you should sell them a little lower than their BIN, then you have best chance to make the coins as fast as possible. Tracing for those popular cards that every one want. Bid gold or rare gold contract cards for 150 to 250 coins, then sell for the lowest BIN like 300 or 350 coins, so as fitness and squad change cards.

Trading strategy of budget 25000-100000 coins (part 1)
Chemistry style technique
Search in the market and looking for those players who with really expensive chemistry styles. We recommend hunter because this is the most valuable chemistry style card in the market. It increase your pace and shooting, which is very important to your striker. What you need to do is go into the market, put the player position, put the league, and choose the chemistry style like hunter. Then, try to buy them for the same price of BIN which regular player always been set. For example, Mandzukic is going for 1700 coins on a regular, which has no chemistry style, and if you can get a hunter style Mandzukic for 1700 coins, then you might sell it for like 5000 coins, because people will find one with hunter chemistry style.

Changed position technique
People will put position modified on to their players. For example, some people move Ozil from CAM to CM, and obviously, CM Ozil works better than CAM Ozil. So if you can get CM ozil for the same price of CAM Ozil, you could sell this more and make some money. That’s a really good way because people always overlook the position has been moved and list them in the same price as regular position player. People will find the player in the right position, so it is a effective way to make profit.

Player modification technique
This technique is actually combine the last three technique. What you need to do is to buy a player with as less as you can find BIN price. Then buy the less than the lowest BIN price. Then, we apply those things to our player. If you can sell the player more than combine price, you will make some good profit.

Mass bidding
Basically, you need to find a card that you want to trade with, and you will bid on every single card you find in the market for lower than the lowest BIN price. For instance, De Bruyne worth 6000 coins, and we done the research in the market. Then, we put De Bruyne into our search, and find those max price 10% lower than 6000 coins, and we go through the list and bid on everything that comes up. Bid everything on one hour and just leave it. When we comes back one hour later, we can sell them all for more than at least 6000 coins. You don not have to only do this to one player, you can have a whole load of player that you want doing with it. Depending on how much coins you have got, you could have like half Bundesliga player covered doing this method. Eventually, we will win some card, and anything you win, just list them up. This is really a good way to make huge coins on FIFA.

– Source from: http://www.fifa15-coins.com/news/game-FIFA-15-1832/Perfect-Trading-Strategy-Helps-You-Make-Numerous-FIFA-15-coinspart-2-14566