Step away from the duty-free: you're better off online

David Davies/PA Archive/Press Association Images

Beware the duty-free shops, because according to a new report, there's every chance they are not the haven for bargains that you think - and you may actually be better off buying online when you get home.

So why are we so vulnerable to these rip offs, and which 'bargains' are actually worth it? %VIRTUAL-SkimlinksPromo%