Asus is revamping its Chromebook line-up this week with three new offerings. Firstly, we have the CX1 series, aimed at students and offering a low entry price of £229.99. In the mid-range, there is the CX5 series with prices starting at £599.99 and finally, we have the flagship Asus Chromebook, the CX9, priced at £1,299.99. …