you have to still install it though
you can buy all the bits to make the same system for well under 940 quid
if it was a installed price i would say go t for it, but phone any of the WC'ing suppliers ( cleantech, gardeners etc etc ) around and you will get the EXACT same bits for alot less
sorry to all the freedom fans on here and andrew, but thats just my humble opinion
price it up yourself and see the cost