I have two Radion XR15 Gen 4 and one Radion XR30 Pro Gen 4.
All includes RMS mounts and diffusers.
1) First XR15 has a Mounts has a missing end cap but still holds The light. This one is $375 for light, mount, diffuser
2) XR15 - great condition, $425 for light, mount and diffuser
3) XR30...