This has just sat in a cupboard for years unused.  I am in the process of getting rid of a load of unwanted stuff since a recent house move.  This was originally owned by my grandmother.  I do not even know if it still works as I only have the unit and none of the compressed gas holders.  Somehow I still have the box but it is a bit tatty now but will be fine for sending it through the post.  It is in decent nick but not immaculate.

You can obviously come and collect at no cost if that is convenient/local and you can pay cash on collection if you prefer.