The only dragons ship I had got thrown out some time ago because it was unrealistic to take it with me when I moved. Also it was glued togeather (thanks to my brother) so I couldn't just simply take it apart.
To be honest, I'm a sucker for old lines, especially medieval style ones.
I've collected and still collect the King Arthur and the Assassins Creed lines. You can get them on eBay for a really decent price, and many of them are new and unopened, so that's a great place to get old lines. The pieces from King Arthur and Assassins Creed are really rare and worth the investment.