Was at Costco Docklands (VIC) on the weekend and noticed they had the Mr Men & Little Miss Complete Library (47 books) for $29.95 each. Plenty of stock. As with all Costco items, membership required. I am not sure if this is their usual price, but posting here as I've not seen it cheaper anywhere else. I almost bought it on Saturday for $50 on 'special' elsewhere.
Ebay Cheapest ($35.98 + $8 shipping):
http://www.ebay.com.au/itm/My-Complete-Library-New-Mr-Men-47…
Target ($49, currently out of stock):
http://www.target.com.au/p/my-mr-men-complete-library/513515…
Which 2 books are missing ???