As the max I've only done is two and I just got chests opened, when I did it on my alt, just the first Alleria room and all the chests and the mailbox got me about 350. That's one room.
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All guilds participating in the WF race have been buying up BOEs with good corrupts so it will be on even terms. Also stars got nerfed to the ground so it isn't even an issue anymore.