I wonder about £600. For about £100 you can get a win 10 tablet, 8 inch or 10 inch. Then you can pair it with a bluetooth folding keyboard. Yes, not as elegant or as self contained. But a lot more ergonomic. Admittedly it is hard to put Linux on these machines, owing to the 32bit/64bit boot issue. But if you want something which is very easy to carry in a briefcase or shoulder bag, and a lot easier to type on... For one sixth of the price? For that matter you can also put it in a keyboard case combination. I have a Linx 8 inch which I did that with, and it works very well.