SNIPING ???

Alright people, i wanted to get your input on sniping. As expected i did not get my account back so i made another account. Just too much trouble to fight it. So this is the deal though, EA did not explain to me at all what i did wrong. I cant afford to buy coins so i did NOT use a third party. I didnt even buy points in the store. I snipe cards in the auction house which im sure MOST of you do. Buy low and sell high, thats what we've always done right. Thats the only way to stay competitive without spending money. For example right now i will be sniping TOTW 83's for 22K and reselling for 30K. Not a lot of profit but it adds up if you have the time.

Now what my question is.... is there some sort of limit or some rule that im not aware of using the AH to snipe cards low and sell higher ?  ive almost got this new account up to speed and i would hate to get banned again because i didnt know something. This is what i do i work the auction house. So if there is something or way i need to know about it please let me know so i know NOT to do it. 

One thing im trying is instead of selling the card right then when i buy it im sending them to my binder to sit for a bit. The ONLY thing that made sense to me is that MAYBE i got so fast at buying and selling them that the automated system thought i was some sort of bot. Now thats ridiculous but its all i got as EA didnt explain.

So are there AUCTION HOUSE rules that im not aware of ?

First question, did you use mut exchange?

dont even know what MUT exchange is LOL so i guess no.

From my understanding buying low selling high can be considered against TOS especially if it's something that you are constantly doing maybe they see it as price fixing and you get flagged. Over the last few years there have been multiple people getting banned for this. 

I would suggest building sets for cheap and selling the card for profit.