One thing that fascinates me is the rare, expensive, and obscure corners of the now vast history books of the many Transformers toylines over the years. To be clear, I don't go shelling out tons of money to actually buy a lot of these treasures. I have a very small handful rare/pricey bots, but the vast majority of my collection has been acquired on the cheap. The main reason for my interest is the stories these bots have to tell about why they are so rare and/or sought after. This thread is here to explore these stories, and hopefully not cause the already high prices of rare bots to skyrocket even further. That being said, no Transformers toyline is excluded from this discussion. (You'd be surprised how quickly a Transformer can become rare and expensive!) Here are both my picks for an unbiased holy grail, and my own personal holy grail: Unbiased: The original G1 Predaking Never that huge of a deal to me, but Predaking has always had THE highest asking price of any Transformer--even compared to his fellow G1 combiners. I've seen many a Transformers fan drooling over the prospect of owning one. The original toy (complete) goes for sometimes over $300. I've seen it as high as $700 or so before the reissues started happening in 2010. Personally, I'll settle for the much cheaper 2013 model in due time. Totally Biased: Tough to narrow this down. Throughout my childhood I always wanted Ultra Magnus, an easy quest to complete in my adulthood, I also kind of wanted Metroplex, and I was lucky enough to have him land in my possession for FREE. So the one that now eludes me the most is the original G1 Jetfire/Skyfire. I do have the recent reissue Generations version, but it lacks an important feature to me. Because I'm also a big fan of Macross/Robotech I love the fact that this guy doubles as a Valkyrie Fighter. The problem is the new toy can't do the Battleroid (two-legged-jet) mode. Probably because of rights issues with Harmony Gold, the owners of the US Macross/Robotech rights. Because of the complicated history of G1 Jetfire, we'll likely never get a fully functional reissue. Trying to procure the original toy (complete) will potentially cost you around $200, sometimes less, sometimes more.