Instore at my local branch (Dumbarton). Only seen the green ones, which, in my opinion, is the best. These are normally £1.18 a can and the cheapest I had ever seen them was 2 for £2. I asked the guy in the shop and he told me that all shops should have them. I will be checking other stores tomorrow and literally filling my car with them. For any of you who dont know what this stuff is, try it!!