I'm aware you can get a better deal on cans in the major supermarkets but if you prefer bottles like myself this is a pretty good deal.
Roughly £1.77 per litre.
Seen this in Lidl in Omagh, Tyrone, so not sure if it's a local or national.
For context, I'm comparing this with £10 for one of these boxes in Centra and £10 for 15x275ml in Costcutter.
Offer is live from 19/12 to 1/1.