This is a slightly complicated deal as the orignal offer on the bottle is:
"Buy for 1.99 if you buy anyother product."
Now there is another offer on car cleaning products which states:
"Buy two cleaning products and get one free"
So by combining the two deals you get 3 one litre bottles for 3.98.
I purchased six bottles of 1L for 7.98. otherwise a 5L bottle is 14.98
Plenty instore at goodmayes Branch