The KSE Firespray (Boba Fett's ship from The Empire Strikes Back) was the rarest ship in the game upon release. It could only be crafted by players who had mastered the Shipwright profession, and even then, a schematic had to be assembled from 8 separate disk fragments. These disk fragments were generated randomly when a Shipwright used the new "reverse engineer" process to deconstruct and enhance looted ship components.
If you were the luckiest person in the world, you would have to reverse engineer about 800-1000 components to get a complete set of blueprints. But since the generated disks and their appearance was random, it was far more likely that a single Shipwright would never generate the full set of 8 by themselves (i.e. without trading for missing disks) in their entire career.