@billybacardi,
If you are lucky you might find one on Freecycle or Freegle. I picked up a 35L Burco boiler that way. Also worth checking out your local council tip, they often have amazing things that people have thrown out. I have plied the folk at my local skip with quantities of beer which seems to work a charm, they now look out for Grolsch type bottles and call me when any come in.