Actually, money can be a problem. I spent 7 gold on a guild tabard, and also have not been getting the uber drops many others have, so my equipment is a matter of AH, and the little luck I have had.
If you are a spend thrift, and don't need the best gear, only decent gear, you will be fine. If you take up a trade and are dedicated to it, you can make money. If you take up a trade that allowes you to craft your own armour over time, even better, and less money you have to spend.
Just remember, a little gold goes a long way.