Is this company reliable?
Doesn't look like it!
http://www.complaintsboard.com/complaints/dvdsetshop-c305350.html
Hmm...
Also probably quite, quite illegal.
Hmmm. Those dodgy Chinese-made pirated boxsets sell for about three to eight quid in Asia (depending on the number of discs), so that website's average price of about 60 quid per boxset is rather harsh. Sometimes the quality is great, sometimes it's poor. Often the special features are omitted or truncated, and invariably the discs used are super-cheap, so after a few years they may fleck and become useless. Much better off with originals.