Spotted this in the Hull Home Bargains, didn't actually buy any cos it would have been too heavy to carry all the way around Hull and then back to my flat, but thought it was a good deal, as Tesco are doing the same 2L bottles 2 for £3.
Farmfoods stock this at this price too and Iceland at £2 for 3 litres including orange and pineapple! With how much mine get thru need to buy it on tap! lol!