I have a fireplace that I bought from Argos about 3 years ago for sale. It is pretty much identical to the below;http://www.argos.co.uk/static/Product/partNumber/4173043/Trail/searchtext%3EFIRE+SUITE.htm
It works perfectly and is in very good condition. I have taken two pictures (see below). It is an electric convector heater and has white stones with a light underneath for a fire effect.
It is a very large item so collection only - Swindon on the M4 is the location. Looking for £100. Not bad for something that still retails at about £400.
If you have any questions just ask.