This may not seem that great on the face of it but it actually is. No-where is selling export this cheap in any quantity at the moment that I am aware of, and to get 1.68 pl especially when only buying 4 is very cheap.
Asda sell these for £3.48 and sainsburys sell 8 for £7.50.
Even if you buy 15 from Asda for £12.36 you still get worse value.
You will struggle to find regular Carlsberg at this price.