If you’re looking for some extra spending money, acquiring some Thorium will give you a versatile means of doing it. The best place to acquire the Ore is Un’Goro Crater, and a few laps around the outside will result in plenty to work with. You can always check the Auction House for the price of Ore and Bars to save yourself some time too. While doing so, keep an eye on the price of Thorium Widgets if you have an Engineer (or know one).
The Lifelike Mechanical Toad requires four of such Widgets to make. I’ve mentioned before how rare the recipe is, but if you have access to it through yourself or someone else you can easily sell them. I personally sell mine for 150-300g each these days, listing one at a time.
Blacksmiths can generate an incredible amount of gold on Alliance side with Thorium, thanks to Transmogrification. The Imperial Plate set is the only one that resembles the Stormwind guards and a great many players seek this look. I keep listing pieces higher and higher and they keep selling. I honestly expect to be undercut at some point, but it’s not happening. A quick look at The Undermine Journal puts the US Alliance Market Price at 131g for the Chest alone, and more than that is quite reasonable to expect.
The third area to make use of Thorium is Jewelcrafting. The Ruby Crown of Restoration is still a great BoE headpiece for its level. But also, Ruby Pendant of Fire, Red Ring of Destruction, Simple Opal Ring, and Aquamarine Ward all tend to disenchant into materials worth far more than the Thorium and respective gem they require.
So there you are. A few simple ways you can Transmute Thorium into Gold currency. What surprises me is how little competition I have when I decide to start farming in Un’Goro Crater If you find the same, there’s worse ways to generate some income. It also means the less competition you have in the zone, the less competition you’re likely to have on your Auction House.