Yulson gears tradeable by cheaters please fix this!

Hello
I've seen some people got Yulson Humbug Glasses that you can only be obtained if you are Mage or Priest class

I've seen some Jesters running around with it
And I've been asking one of them they said they bought it from a cheater

This kind of things will keep continue if GM dont do anything about it

PS: I wanna know when is Yulson Event gonna end
And will the items dissappear after the event ends?

And thank you GM for releasing me from Arena Zone
I've been stuck there for 4-5 days (Got out yesterday)
My 7 Days Pet ran out and so is my x100% Exp
And thank you for not responding my tickets!