To add, there's been some bugs that occurred where players were able to transfer over Dawnport and Mainland items. (Source) So anything that doesn't appear in Rookgaard or is unobtainable is considered rare. There is plenty of items to list in this case, however, you need to be careful because as mentioned in the comments players are tricking others by claiming they have rares. For example, in Char Bazaar players parcel the items to the Rookgaard character so it appears as if they have the items when really they don't.
Third Anniversary InfographicDecember 28, 2020
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