Just got back from Sainsbury's and picked up two cases of Kronenburg for £15. Was £12 one case and only 3 pound more for the 2nd one.
I could see this offer on here and it runs till 16 th July so worth letting you know.
There are other beers on this offer in a mix and match. Mostly tinnies but bottled Sol is also listed.
Copied from the web site.
John Smith's Extra Smooth 12x440ml
Kronenbourg 1664 15x275ml
Sol Mexican Lager 12x330ml
So there you have.. For the Sol and Kronenburg this seems good. The rest...who knows.