Spares have shot up in price over the past few years especially if the item has the word 'caravan' in front of it. Recently I needed a thermocouple for my Electrolux/Dometic fridge. Leisurespares and the likes wanted £42 for one. I got one off ebay listed for a Beko gas cooker for £6. And how about those two little thermostats in the bottom of the Truma Ultraheat? Four or five years ago they were a fiver each. Now your looking at 30quid or so for one. Potterton have similar in their boilers at £6. It really is a scandal