My profits from the past 3 days, and as you can see, Starlight Rose is my most profitable resource. Unfortunately, the value of Starlight Rose (and all other resources) are going to drop dramatically once patch 7.1 is released. Take advantage of the WoW economy now!
So I wanted to do a little experiment with my sales. I first put a full stack of 200 Starlight Rose on the Action House, which went for about 45k gold. Although it did eventually sell, it sat for nearly 2 days. And I had to re-post it due to undercuts.
The second time I posted 200 Starlight Rose, I did it in stacks of 20. And they all sold with minutes! So I even waited till the next day, and put up another full stack of 200. Same results as before; it sat on the Auction House for quite a bit of time. But when I re-posted it in stacks of 20, it sold in minutes!
After the profits from the past 3 days, this is what the guild vault looks like. My goal is to hit the 500k mark by this weekend.