When does the Halloween event end?
I haven’t found any official word either, but based on past years, I’d guess it will go away on Tuesday morning sometime with the usual patch.
I think I read somewhere 11/2 but I am not certain on that.
Last year, the end of the event was uncertain too. I don’t remember when it ended but it caught people with surprise and caused quite a bit of grief because they couldn’t exchange all their nougats, skulls, and fangs for the rarer item because the vendor disappeared also. Nothing was ever done, so the lesson to be learned here, is that if you have any of those items you’d like to exchange do so now because Anet hasn’t/isn’t telling us when vendors are going to vanish.
The one for candy corn cobs will likely remain all year again.