But the sales-like nature of this visit put me off could i save more elsewhere? Darren reckons plumbing was a great choice. Finally we get to the most important part of this boiler-replacing tale: the price a quick google search reveals a top-notch, a-rated condensing boiler to be around £, so why is the average price over double that? There are currently no thanks for this post. Check our latest offers â huge discounts, regularly updated ! Great.