"Essentially the Scrap-o-Matic 1000 works like the Obliterum Forge in Legion however one major difference from Legion is that you can use it to break down any gear obtained that is from the Battle for Azeroth expansion, including dungeon/raid drops, quest rewards, world drops and crafted gear. Apart from a chance at getting Expulsom you will also get ore, gems, leather, occasional enchanting mats (from scrapping cloth gear) and other crafting mats. The best way to obtain Expulsom seems to be from breaking down rare/epic gear you obtain from dungeons and raids, killing rare elites and doing world quests, it also drops rarely from BFA uncommon quality items."
The expansion is set immediately after the events of Legion. Two continents have been added within the Great Sea between the Eastern Kingdoms and Kalimdor: Kul Tiras, one of the major human kingdoms, and Zandalar, the homeland of Azeroth's trolls. While the Alliance and Horde will initially travel to one continent respectively, both continents will be available to both factions at level 120.
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Professions skills are split between expansions now, you'll have a separate skill bar for each expansion. This means you can level the new Battle for Azeroth skill tier without putting any point into any of the previous expansions tiers, you don't have to level Leatherworking with older materials to be able to craft the new BfA items. You can read more about this in my BfA Profession overview.
-Bugs- There aren't too many glaring bugs anymore, but you will certainly encounter some. The pathetic thing is that many of the bugs you'll encounter were reported repeatedly during Alpha/Beta and still weren't fixed. Some bugs were discovered after release and players were able to abuse game mechanics without repercussion unless they were one of the more serious offenders. This gave some players a significant advantage over others because they used exploits and at the start of an expansion, that is the time when it's most impactful.
Warcraft’s longest running Gold Making blog, The Gold Queen is written by Alyzande since 2010. Working on her 14th level 110, she has 9 years expertise in making gold, 19,000+ achievements, 1593 days played, over 39 million gold earned, and now playing World of Warcraft Legion live on www.twitch.tv/thegoldqueen The Gold Queen blog teaches you how to make gold playing Warcraft using ethical trading, auction house flipping, crafting, reselling, snatch lists, and farming gold making. Want more updates on Warcraft Battle for Azeroth? Support my Patreon for exclusive pre-release Gold Guides.
Yes, that is easy, but it's not quick. Further down in my comments to OP I detailed the GIO farm, and reasonable yield expectations. I looked up a few guides/videos before commenting and most of them estimate a yield beween 800-1,000 GIO/hour. That lines up with my past experience with it as well. That'd be, taking the high yield end, 4.2 hours to farm the GIO for one toon's monthly needs.
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