It's not £50 but I've got one of these for sale. Haven't thought about price but a sensible offer .... we've moved and have a built in one now. Link to details below picture
http://www.garden4less.co.uk/proddetail.asp?PROD=15501998&partner=fr&gclid=COO8nKjwuMwCFQUq0wodiVwN9Q