There isn't much negative I can say about these ruins kit! There made from a really solid plastic that accepts glue very well.
Their priced around $20 which ironically half the Canadian price of a Games Workshop buildings. Just one corner is almost the same size of a single Cities of Death ruin. Not only that, but you get two corners per box!
They fit very well in the Gothic setting, and seem very stable and sturdy. Assembly time, which included cleanup, gluing and flash trimming took less then an hour for four corner ruins! Amazing!
I highly recommend getting this set if your a gamer on a budget, and don't mind the limited modelling options for this set, since the set only assembles three ways.