Today's post falls squarely in the 'quick tip' category, and it's probably something you'll hear me talk about on the podcast if you haven't already. As you may or may not know, I'm in the Convert to Raid guild over on US-Aerie Peak, and prices on the AH there can be a bit - wonky.
Lets look at Spirit Dust on TUJ:
Very cheap right? Yes - in fact it's so cheap that it makes you wonder - is it worth the trouble to shuffle for dust? Among other fantastic shuffle questions, my spreadsheet answers this question - and if you haven't already checked it out, then give it a try by clicking the sidebar and checking out my signature tools page where you can download it.
But for this question, in particular, I can give a much more illustrated answer. We only need to know two things. What are they?
#1 - The yield rate of dust from uncommon level jewelry. That is about 2.2 dust per disenchant.
#2 - The vendor value of said jewelry. That's just under 9 gold at 8g 97s 82c.
With some simple arithmetic, we see that the vendor floor for shuffling for dust is 8.9782g / 2.20 = 4.081g.
Which is pretty far up there, in relation to where my market is. What that means is that if dust is below ~4g, I'm better off vendoring my 384 jewelry and buying that dust off the AH. So before you shuffle, make sure you look through my spreadsheet or do some quick napkin math and figure out what the most gold-efficient path is.
And the next time somebody tells you nothing is changing in goldmaking - ask them when they last ran the math on their markets was ;)
Editor's Note: Since this post went live, I've had some great feedback in the comments regarding the yield rate of essence from disenchanting these pieces of jewelry from UtesDad. On average, you get about 0.3 essence per disenchant. On the high end, you could count an essence as being worth 5 dust because we know 5 dust will make 1 essence. That would give another 1.5 dust per disenchant on top of our standard 2.2, for a sum total of 3.7. Now, if you include the 20% bonus that comes from the Bountiful Bags guild perk, that comes to an effective yield rate of 4.44 dust per disenchant. Now, if we repeat the division in the post above, we have 8.9782g / 4.44 = 2.0221g.
Which is why I personally look for dust when it's below 2g. As you can see in the figure above in the original post, those are prices that I'm now seeing very regularly.