The Blackbird is one of those kits like the Komet, Ho 229, Flying Pancake or similar experimental aircraft that would sell despite not having as many actual prototypes as a Mig 21, Mustang, Spitfire or 109. There is a huge fan base for this one, and in this case, it had a long history of significant contribution to the Cold War efforts. It didn't have to shoot, but then neither did a lot of other recon planes. And the drones were extremely cool... Imagine them in 1/32 also. Nice.