I watched this ages ago, when it first aired, but from what I remember, it needed so much work, they were always going to make a loss. They did a great job, very thorough, but cost loads more than it was ever going to be worth.
Which is fine when it's being done for tv as they will foot the bill, but if it was any of us doing it, we'd probably think twice before taking it on.
I'm sure Duncan wouldn't have made a loss on it though
