A few years back, I bought Nikon D50 from them - they were doing a special at the time.
It arrived, a bit later than expected, but on arrival, I noticed it was in a box with NO packaging... which I though strange... opening up the box, gave the camera a little shake & a rattling noise was heard... didn't know if that was normal or not for DSLR... but on contacting pixmania again, they sent courier back to pick it up (DHL as far as I remember)... I sent many emails (could never get through to a person over the phone) asking them to package it up properly etc before shipping the replacement. This happened two further times - same fault (was different camera each time)... with emails exchanged each time.. had it out with DHL, had it out with pixmania (over email though)... requested my money back if the next one wasn't as expected - next one that arrived was ok...
All in all, I did find this very frustrating... but they had a process which I followed - had to remind them of their process in a few emails... I found them helpful enough but still had to use some strongly worded emails - specifically quoting their own terms & conditions... I heard/read of people having bad & good experiences of them at the time... I haven't used them for any expensive electronics since... just think there is an issue (maybe just at that time) with the packaging of these sensitive items, so didn't want to risk it again...