Yep, you can purchase the detachable keyboard for them. There is both a fancy looking ‘touch’ keyboard, or a more traditional mechanical keyboard; the latter of which is more suitable if you are doing a lot of typing. Unfortunately however, it is an optional extra, priced at about $130.
I think making the keyboards optional extras is a bit dirty. A machine like this is targeted towards the ‘mobile office’ crowd, as opposed to the casual tablet user. As such I guess the vast majority of users will need a keyboard, and I think they are trying to make an easy quid from that.
Overall I think the surface is quite expensive for what it is. It hovers in the realm between a tablet and an ‘ultrabook’. There are similar ultrabooks for sale at considerably lesser prices, some more than $300 cheaper. So I think it really pays to look around at your options before purchasing something like this; you may be able to find something that fits your needs and save a quid or two.
Personally however, I am quite happy with it. It is a good mobile workstation, but at the same time can easily be used as a traditional tablet for light entertainment. The only problem is that I now cry every time I look at my bank account! Nonetheless, that was the choice I made.
Cheers,
nerb.