I wanted to write this review to state that the boxes appear to be relatively well made.
They managed to make it through being thrown up some stairs by the delivery man (not sure why he didn't pay any attention to the FRAGILE stickers), and weren't particularly well protected (just cardboard all around) - but they arrived unscratched and unchipped.
I will be filling these up over the coming days, and will report back if I encounter any problems, but from what I can see, they're money well spent.
I would add, though - relative to the carrier, not the product itself, that the carrier used to deliver MY order had a large sticker on the box stating that contents needed to be examined BEFORE the items were signed for. So, if like another reviewer, you're unlucky, and they arrived damaged - you may not be able to claim compensation for that if you sign before checking.