Charity shops, amazon, ebay, supermarkets (although only some of their stuff). Peacocks sometimes have things for a similar price, especially if there's an offer on/ with a student discount. I think there's a shop called store 21 or something that sells stuff really cheaply. Although I've only seen one, so idunno how many there are in the country, there isn't one in my town. Having said that, there isn't a primark in my town either.