Ghosts VI is now available in 24-48 hi-res lossless at Qobuz. This is the first time it's been available at that resolution for purchase:
https://www.qobuz.com/us-en/album/gh.../ymbc4tkxtn2pc
Previously, V and VI were available on 7Digital, but as 24-44. I think that those are downsampled for unknown reasons, however. We all know that TRAR do all their current work at 24-48, and the free MP3 downloads on nin.com for these Ghosts albums were at 48 KHz, so there's no reason to believe that 44.1 KHz is the correct sampling rate.
I have not been able to find Ghosts V for purchase at 24-48. It is available for streaming (only) at 24-48 on Apple Music's new lossless streaming.