I've been keeping an eye on a few advent calendars for Christmas and this one has finally dropped in price. It's been a similar price closer to Christmas for those that don't have the space and want to risk it. It's been sitting in about $24 for a while so I wouldn't pay much attention to the rrp.
Amazon seem to be matching Big W but they have limited stock and much prefer buying from Amazon due to possible risk of cancellation.
We used this advent calendar and I have mixed feelings about it. The stories were good and basically book versions of actual episodes, but every second day was a colouring book. The last thing I want my kid to be doing at bed time is a colouring book.