The economy in WoW has some interesting nuances. Players spend oodles of WoW gold on their crafting professions, and sometimes manage to turn a tidy profit. I'm often surprised to see some items that are strongly in-demand, like Light Feathers. Shrewd players use the auction house to build their bankrolls. Lomentari of EU-Draenor is exasperated with people who fail to use the auction house "properly."
She is angry that other crafters are selling the same product she creates for several gold lower than her preferred price. The items are placed on the auction house en masse at the low low rate, which the original poster blames on Leather Workers skilling up. She feels powerless to do anything about her "massive money loss." The original poster is willing to accept small cuts in pricing, but has a hard time deal with steep declines in prices.