This may be of interest to uk members, i have loads of blades after buying 3 huge sample packs, so i always have 2 packs in use at the same time, 1 sample and one easily available pack, been through the tescos, asda, boots etc, so bought a 10 pack from sainsburys a while ago for £1.99, opened them this morning expecting them to be the same as the tesco etc, but after you take off the sainbury card, they are packed and marked as dorcos, which was a suprise.