Hi,
The new Death Jarl items, the Helm, Cloak, and Bracers, which have just been introduced in the Forgotten Saga free update, can be bought multiple times from the vendor Everold. This only happens so far with the items I have mentioned. I also have the Death Jarl leg armor, but that can only be bought once. I am not sure about the weapons yet.
I have recorded a video showing how I already have the items but they still appear in the shop.
Video link: https://drive.google.com/file/d/1JvJHcApk9M8fMOrgeEGXCo4AGyymyBcY/view?usp=sharing: (https://drive.google.com/file/d/1JvJHcApk9M8fMOrgeEGXCo4AGyymyBcY/view?usp=sharing)