We now offer Citrus Training Solutions Student Card's which you can buy online for £11. The card offers huge savings on a range of products and online stores. NUS Extra is the leading lifestyle and discount card for students, On average, students save over £500 a year by using their Extra card. Buying your Extra Card is really easy and takes only a few minutes. Your card will then be delivered within 7 working days, so it doesn't take long before you can start saving money! so what are you waiting for?