They sell them in most supermarkets !!! Try where the dry lentils and couscous is, or maybe just ask... Popcorn is a great snack for us, but I crave the toffee covered stuff so I have to just stay away :-(
Have you ever tried dried chick peas? These are a great alternative snack.
I get them at the Turkish shop; they are dry, but they are quite nice rather than having nuts!
If you fancy trying some, next time I go to the Turkish shop I will get a bag and send you some to try.
I do popcorn a lot for my hubby; you can use the spray oil, just to help so that they dont burn, as they tend to do this. Use a good non stick pan and I usually keep moving the pan about to stop them burning, esp since not putting butter or oil in the pan.
I love popping corn. I've still got some I bought from one of the Indian supermarkets, although I do use a little olive oil, salt and hot chilli powder....yum! Once you've made it you ca see how much the cinema rips you off with the prices they charge, about 10,000 times what it actually costs for the popping corn!!!!