ChineseArithmetic
It is what it is
I would recommend http://www.vinylbox.co.uk/
they are (or were) much cheaper than spybox
and the guy drove my order (60 boxes) to my house and helped me set them all up!
good service!
Those are a good cheap price, but are they safe and stable stacked on top of each other? It says 'modular', but there doesn't seem to be anything that fixes them together.