Now I'm not trying to resurrect that discussion but I've never had much luck with the Abyss Crystal shatter as a source of infinite dust, I've always used my Jewelcrafter to make bloodstone bands, crystal citrine necklace & sun rock rings to disenchant. I have a permanent watch set up for the gems & I only buy them when they are below 3 gold each & preferably below 2 gold!
Since May this year, I've also been picking up very cheap Wrath armour to disenchant - I check the dust price & base my armour buy price on that. I also only buy the top end greens - level 78-80 as they give an average of 5 dusts per item.
So I thought I'd lay out some results from a little test I did last week. I've used The Undermine Journal mean price for my cost prices as I had a lot of stuff in my bank already.
Abyss Crystal Shatter13 Abyss Crystal (TUJ mean price 427.70g) = 18 Infinite Dust + 41 Greater Cosmic Essences (TUJ mean price 491.34g)
Overall profit = 63.64g
This is a perfect example of my previous experience with the abyss shatter - I always get more GCE's so as a source of infinite dust, it is very frustrating even though GCE's still sell pretty well.
Wrath lvl 78-80 Green Armor14 various items all at 10g or less, approx cost 140g = 78 infinite dust + 5 greater cosmic essences (TUJ mean price 533.70g)
Overall profit = 393.70g
Jewelcraft Rings/Necks to Disenchant60 x rings/necks approx cost 210gold = 102 Infinite Dust + 22 lesser Cosmic Essences + 5 small dream shards (TUJ mean price = 758.74g)
Overall profit = 548.74g
I made a variety of bloodstone bands, crystal citrine necklaces & sun rock rings. The bloodstone, sun crystals & huge citrines were bought over time as an average of 2g each & the crystallized earth required cost approx 75 silvers each.
TUJ Mean Prices usedInfinite Dust 6.25
Greater Cosmic Essence 9.24g
Abyss Crystal 32.90
Lesser Cosmic Essence 4.47g
Small Dream Shard 4.58
SummaryI realise the abyss crystal sample size is way too small to be really representative of the possible outcome but to be honest, at an average of 32g each, I just didn't want to spend out more cash, knowing my previous luck! Also, bear in mind, I'm trying to source Infinite Dust specifically in this post - if I just wanted Wrath enchanting mats then it wouldn't really matter too much :)
The easiest way right now is the Wrath greens - there is an abundance on my server as people are rushing their alts through Northrend before Mists of Pandaria arrives. Some items are below 5g so even if they only give me 2 infinite dusts, I'm still snatching them up!
Conversely, the gems for the rings/necks seem to be increasing in price - it took me a fair while to get enough gems to craft this many rings. If I hadn't been clearing out all my bank bags, I probably would have had a much smaller sample size!
If you need Infinite Dust - where do you get yours? Do you bite the bullet & pay AH prices or have you tried a different way? Let me know - would love your comments.