I've spend HOURS on the net searching for 100% cotton bed linen for my boy's first 'big bed' - i.e. standard single. None of the major stores - Next, John Lewis, M&S - seem to be selling them; it's all a polyester mix which I'm not interested in. Mothercare has one dull design. I have found one online store which offers more but the stuff they are selling - even though lovely - it's so pricey! Do I really have to spend over £40 on 100% cotton bedding for my kid?... Help!