Hiya friends! I'm using this study break to bring y'all a random tip that you might find useful. Something I've recently taken up on my odds'n'ends bank alt is flipping rare weapons. Pretty simple tactic to do, and tends to bring in a semi-decent amount of gold. A nice supplement for established goblins, and a great way to earn some extra coin if you're just starting out.
So what to do? Just go to your local AH, go to the default search UI, limit the search to "rare" quality weapons level 70 and below, hit search, and sort by lowest bid amount! I'll usually buy any weapon that's listed at 20g or below, and bid on anything with a 10g bid or lower (if it's not within my buying threshold, of course). I've set up a little TSM group for all the weapons I snatch too. 48hr post, 100g fallback, ~30g or something threshold (not sure on that, rarely matters anyway). As vendor prices on most sub-60 weapons are pretty low, you're not losing much in deposit costs. The 100g default is a pretty fair price too, as that's a pittance for most players right now, and you're mainly catering to people leveling alts who want some nice blue gear.
I was a bit skeptical that this would work when I first started it. After all, doesn't everyone have BoA weapons now? Well, apparently not! I'd say I sell ~5 weapons a week. Not a huge amount, but certainly worth the negligible time and effort it takes to do this! You'd be surprised at how many people sell world drop rares for next to nothing, or even better, don't understand how to price the bid (I often find weapons with a 50g+ buyout, and a 4g bid). You can also do this for epic weapons (I'll buy almost anything for 100g, post for 500g minimum), though they move a lot slower and the deposit costs are higher.