Funnily enough, just been looking at this stuff too...I don't want to be in the position where my Adblue becomes a distress purchase on some motorway forecourt!
Euro Car Parts are cheaper in their "sale" - ECP are the DFS of the parts world - you'd have to be thick or desperate to buy at full price ;-)
code
weekend 30
Same brand of Adblue - £9.79 free post
Greenchem Adblue 10LtrProduct Code: 542770535
http://www.eurocarparts.com/ecp/p/car-accessories/engine-oils-and-car-fluids/car-additives/diesel-system-additives/?542770535&&cc5_862
However, can't see if the ECP package includes a nozzle? That said, the Halfords one appears to be universal & not VW specific?
Have asked Car Parts for Less (CP4L) to quote - (ECP sister company - more trade orientated & so almost always cheaper, even than the ECP "SALE price").
I have dealt with ECP & CP4L for years - they are reputable.
I have seen even cheaper on The Bay, but worried about the quality of the chemical? I think this is quite critical?
Any other recommendations?