So I played a bit of the event, some of the low hanging fruit - I'd given up on dungeon candy corn, and by last night I had 12K corn. I saw the store had a skin I could pick up for 9K (not sure I even wanted it) but I could pick up 5 jibber tokens to bring him to 20.
The store was advertised as being open until 3PM CST today, so this morning I went in to buy my jibber tokens and found they're no longer there (and neither is the skin but I'll survive.) I then get a Bossmail telling me I didn't win any rewards, that I need to participate more next time.
And please don't say "We advertise how long each item will be in the shop." Whether you do or not, in my opinion that's a very flawed technique, and counterintuitive, designed to get people to buy fast, but will in fact get people to buy less and frustrate them.
If you are purposely trying to make players angry and go elsewhere, keep it up - its working.
(I also found it amusing and sad that yesterday's BossMail said the event would end at 12PM CST Nov 1. Luckily, I knew they -meant- midnight, 12AM, but still.)