Im not a smoker myself so i didnt look too closely at this in the shop, but thought that a pound sounded like a bargin!!!
They are also on off in boots, (i googled it to check £1 was a good deal before posting!!)but the cheapest i could see was £8.40.
They were def in date as i asked the lady at the til-this was in the Norwich store, not sure on the size of the pack, or flavour, but the box was about the size of an A6 piece of paper.
Cant add a link im afraid as their site seems to be down!-Sorry!