I have a very high coin total because I traded like 1.5 hours a day for about a few weeks halfway through October to November, and I was on a roll. I got van Persie in a pack that I opened with my own coins and got 70K for him (this proves this was a while ago). Instead of buying a new team, I was smart and started trading.

70K to 350k in just a few weeks. Now, I bulk bid on Reus for like a week, and I made an absolutely crucial mistake. I bought them all a week before BO2 came out. Not all sold, and after BO2, i was stuck with s lot of Reus's. I lost around 20k on that, prolly more. Now, it happened again. I bulk bid on a player I do not want to mention because he usually works well for me, but now his price has dropped drastically the day after I spent all 450k of my money on the day before! I am waiting it out because I think this is due to the influx of cards on the market since everyone wants those In-Forms, but it is frustrating to see that trading is not as effective for me anymore. I have bad luck with when I make bulk buys.

My tip for everyone is to make bulk buys of specific players in a time of the market when it is known to be stable. Dont make the same mistake I have!