SaltyNZ:
The Warehouse stuff is cheaper than Ikea, but that's because it's all made of Chinese cardboard. I don't really see them competing in the same space at all. Of course it has been years since I bought anything from Ikea so maybe their stuff is cardboard too nowadays.
Its thicker where it counts. I've not seen a billy have shelves sag, whereas all my warehouse bookcases have because the shelves are so much thinner. And they are only 600 wide vs the billy at 800. Also way more positioning holes in the billy and you can get additional shelves and pins easily.


