Anyone with young chrildren these are a god send but generally are expensive , however they had them in Lidl for 20 quid, bought 2, easy to put together, good size box. Could not see them listed on their site, but have seen them in 2 stores now.
Plastic ones tend to me more expensive than this price, a bit of a bargain. I have seen wooden ones usually around the £60 - £150 mark.
the picture is a close match, except it has casters, not posh legs.