Todays market nears expansions end and the best items selling are items for alts, be it alts levelling or alts raising their crafting skills. If you are getting lost in all the crashing markets, with the price plummets, look for a new area to focus on : Supplier of All Alts Needs.
Netherweave bag market -all time high average now.
Rare gems for socket bonus vs epic gems.
Quest required player craftables as people focus on Loremaster.