Visit the Kill Switch Master List for more information on this and other current known issues: https://forums.bhvr.com/dead-by-daylight/kb/articles/299-kill-switch-master-list
Going worse..
No one cares if you sell a outfit for money. But tricking people like we will get all of them with the event and then say 6 of them for money is just plain bad. If you'd put those to the shop, and made 2 skin specific for the event; no one would be mad.
Have you ever played Wow? Or a free to play mobile game? Did you study why people keep playing those games? I'll save you from that, and tell. We want to EARN something. We want to ACCOMPLISH something. If I hook 100 survivors on the Halloween, I just want a skin/weapon that shows I made that. Make another skins for money and put to the shop, we don't care.
Just give us something to accomplish. Give us legacy prestige items, give us player level accomplishments. Make new grinding events for goods. But this is worse then free to play mobile game. Even those give out their premium currency just with watching ads!
This is your worse event with the best outfits. Great job!