Hello! I've recently had our heating converted to Google control, our boiler is a boulter buderus, however before the Google was installed I had a look at prices for the original modulink 250 unit and thermostat, they seemed to be going for silly prices, mine is second hand but in full working order, so I was thinking about selling it, however I'm not a plumber myself so I've joined here to ask would it be worth me selling it? It's surplus to me now, so if it went to someone with a use for it that would be great.