This one is free of charge to anyone happy to build and fly this 3D printed Autogyro
The main fuselage is printed in (mainly) LW-PLA and other parts printed in std PLA or PET-G
All information, build files and flight videos can be found here:
Tadpole .. 3D printed Autogyro
$12.00Price
What you get ... You are purchasing (free of charge) ... G-Code and STL files