Ok first of all, you need about 2k for a first investment.
I will tell how I made with what/which stuff alot of gold.
*Note: Prices said in this guide are an example, so you dont have to work by these.
Ive always been buying uncut gems, cut em and sell em, this is slow but steady amounts of gold (about 10g on each gem).. many know about this and therefor this would be reposting.
I will tell you my secrets on becoming rich.
Find a GOOD selling gem, I have been selling gems since lets say everyone gets their new epic gear(karazhan farmers++) on a daily base.
Due to this I know What Sells and What Doesn't Sell.
I found out that Bright Living Ruby is a topsale.
So what I do is:
Buy all Living rubys, for the right prices (dont buy anything thats above your selling price)
Now, I bought all Bright Living Rubys.
This way, noone could get them Bright Living Rubys, low stock = higher ask to product = more money.
Now send about 3 bright living rubys to an alt
put em on for lets say 2.5x buying price, so if you bought Living Rubys for 50 gold, get your alts Bright Living Rubys on AH for 125g~.
This way people think it will be a normal price..
By the time, you should have 50-100 Bright living rubys on your main.
You put about 5 on a time for about 79g bid and 99g buyout.
Now say in Trade: On AH now! Bright living rubys! 79g! about 50g cheaper then others.
(Tip: Make sure you still rule and owe the Living Ruby market, only YOU should be selling Bright living rubys.. buy all living rubys that are sold below your price.)
I think you get the deal now..
Noone can get cheap Bright living rubys on my server again.
I wish you best of luck with this method, I know it has some parts of reposting, but I tried to tell everything how I have experienced it.
*If this guide is too hard to understand, then you will never be able to make large amounts of money