Sesame Snaps, a box of twenty-four 30g packets for just £4.14, which woks out at less than 18p per packet. Select the Super Saver option for free delivery.
This is also eligible for Prime, so Prime subscribers can get free next day delivery.
For those who don't know, these are very moreish! They are a bit like nut brittle, except thinner and with sesame seeds instead of nuts. There are three of them in each 30g pack.