I think all event rares need to be tagged with duped or non-duped.
Maybe like baseball steriod year, non steriod year.
Becausing of the duping, it is insane to trust a purchase price for those items. And buyers really need to be educated. Look at vine cord sandals. They arent rare. Several months ago many sandals were sold for a few mill by someone that came across them.
IDOCS are turning up a lot of event items and server rares.
Sadly, I think duping has killed the DUPE ERA rares.
Yes, Include them in rares. But tag them heavily with duped.
Start post dupe rares. And if a dupe returns. They too have to be tagged.
I admire your commitment to trying to manage a fair rares forum. Duping has hurt.