Thanks for working that all out! I was trying to do it, but have not had my coffee yet and my brain just didn't want to do math yet....
so if you can work at it steady every day, you should be able to turn in one collection every second day..... We have 18 days so a person could conceivably get 9 or 10 prizes from collections...providing you had the ability to get the cauldron in the first place. In 6 hours I should be able to turn in my first collection! (because I recieved 2 of the frankenstien candies from the trap)
the thing about this event is that people are not going to be selling candies in the newspaper.... unless they don't want to do the event at all, or unless they have gotten all the prizes to be had.