Whilst the harmonisation of consumer policy and legislation on a national basis has been a great step forward IMO, I don't think it is as clear cut as your comments imply, when dealing with ebay or other internet purchases that have another tier of "policy intent" and attached terms and conditions that come into play.

My observation is that legislation has not kept up with internet trading in the slightest and out-dated Acts are being retro-fit via weak amendments or applied purely by case precedents, rather than sound policy intent - and that is not good law making IMO.