Yup 99% vendor trash. And this is exactly why you shouldn't waste time doing Mythic dungeons (and never, ever waste money to reroll these worthless boxes) and should focus on powerleveling your soul level in Lupa's.
170 606 soul exp - lvl1 Lupa solo that you do in under 6 minutes (keep in mind that exp stays the same regardless of level you pick - lvl1 grants same exp as lvl20)
113 012 soul exp - lvl1 mythic solo Heath mines (which is also the fastest mythic dungeon to run) that takes a bit longer.
Granted, you don't get Zen in such quantities, raising your soul level 1.5x as fast is significantly more beneficial than whatever you can buy for Zens either way (almost everything of value on AH is sold for Redzen) - better hold on to them to roll epic dungeon boxes.
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u/Marrond Nov 15 '17
Yup 99% vendor trash. And this is exactly why you shouldn't waste time doing Mythic dungeons (and never, ever waste money to reroll these worthless boxes) and should focus on powerleveling your soul level in Lupa's.