Originally by: Corcyrus Endymion
Trading hands down.
I want to emphasize Corcyrus's comment.
I have a trade alt on the same account as this character, my main. I paused my main's training for 2 weeks, and trained the trade alt up. I haven't touched the trade alt's training in months.
About a week ago I logged on, and bought about 200,000,000 worth of goodes. I sold all of these goodies for about 400,000,000 isk in less than a week later. In fact, over half my stock moved in the first 24 hours. Had I resold my stuff at my buy price, I imagine they would have sold instantly or close to it.
This means that, I made about 100,000,000 in profit in 24 hours on a character who has only about 2 weeks worth of trade skills. This also means that had I not trained any trade skills I still would have made a profit, just not nearly as much.
While this isn't typical, this isn't the first time I've made a huge killing in 24-48 hours in the months since I started playing trading games.
If you know what you're doing, trade can make you a small fortune in a very short time. If you have no idea what you're doing, you can potentially lose your butt.