It's always worth keeping a list for this sort of stuff because you have to check hard so you don't get ripped off.
I have Amazon pages bookmarked for each Lego set (plus others) I currently want which I check each morning

Some of their short-term price drops can be staggering, £20-£30 difference over their already slightly less than RRP prices.
Meanwhile, finished building the crawler crane and now on to the Mobile Crane.


) and made a start on it last night. 