When I only saw the first picture I didn't think much of your bargain, but with the second picture suddenly I saw your point!
That's a great price for that load of steck, and if you can use the figures and bits all the better! The lanterns and their sconces should certainly prove useful, and there's some useful hats in there.
The Medival (sic) house could be the add-on version, but more likely it's from the 3666 castle, both have three solid walls on the ground floor, but the add-on single houses have dormer on both sides of the roof, and not the open roof panel, or at least the current crop do. The House with Barn still features the open roof panels on one side.