For the next month or so (May 15ththrough June 30th) Microsoft is offering either the Touch or Type cover as part of your purchase of a Surface RT unit. Apparently, this is only being offered in the UK and is not as an available offer for those in the U.S.
Jump out to read about it: Surface RT: Free. Cover.
I still maintain that the Surface RT is a better tablet than the Surface Pro. See if you agree by reading through a recent article, entitled: Surface Pro vs. Surface RT: An honest comparison