I want to buy a proper bed for my 4 year old DD. I have seen lots of truckle beds (sleep-over type bed available to fit under original bed). It seems like a great idea for sleep-overs but is it worth the money? By the time you've bought the extra truckle bed, mattress and bedding, it could be an extra £300.Has anyone got a truckle bed and does it get enough use to justify the cost?