Been very few decent boardgame deals around this Christmas for fans on the genre to shout about, Monopoly and the other run of the mile games aside.... This was a Amazon Ligthening deal a few days ago at £35'ish. Held off and now its £29.99.
Incidentally, in the past when i have brought "lightning deals" then its been reduced again, I've contact Amazon and they have refunded the difference, in fact I think at least once they have done it Automatically. So if you brought it early in any of the previous deals, hit em up They will probably help you out.