a VirtualTourist member from Narva
Could somebody in Uppsala help me to find a shop with foods, that using by locals. I don't want eating in restaurants and cafes (it's very expensive!), but i want a buy food in shop.
From the top of my head I can think of buying food at the supermarkets Ica, Hemköp or Coop. They all have an area where you can buy ready-to-eat salads and sandwiches. If you're taking the food back to your accommodations and you have an access to a microwave oven, they also sell some prepared food that requires heat (in my opinion!). This tip applies also to Stockholm.
I know you say cafés and restaurants are expensive for your budget but I can highly recommend Cupido and Jalla. Cupido has a take away area with wok dishes and salads and they're sold by the kilo (if my memory doesn't fail me). Jalla is a kebab place. Both are popular among students who don't have too much money but like eating good and healthy. Info in my Uppsala page.