We've just got a normal low bed. I got it off ebay for the bargain price of £55 brand new
I just needed to buy a mattress (which I nicked of my mum lol)
http://cgi.ebay.co.uk/Pine-Bed-Frame-Heartland-Amelia-Single-ONLY-63-00-NEW-/230565152942?pt=Beds_Mattresses&hash=item35aec108ae
Its gone up now
but it's an ideal bed as its quite low and will see them for years.