Congrats . . .
I also recently bought my first couple of steck castles on ebay. I, too got a 3677 and most of a 3666. The 3666 was really cheap - $15 and all it was missing was the floor joints and a couple of window inserts, oh and all of the accessories.
I really like the old steck castles, but I can't seem to find any of the older people without spending a billion dollars (you are a wise man, Martin). So far, the castles themselves have been far cheaper than auctions with the figures I want(any women with pointy hats). Did people just throw out the klickies when they boxed up the castles?
Kelly