As far as I know, the Kami is no longer available.
WOW- Where to begin with the mis-information! Kami is available (although I don't recommend it!) from Aztek, the drum scanner folks. And no, no one uses mineral oil any more, and haven't for many years! So no grease worries! As has been mentioned, Lumina fluid works terrifically, just the right combo of not too volatile, but easy to clean up (actually, clean-up means letting the fluid evaporate- there is no "clean-up" required).
Fluid scans are just as sharp as non-fluid scans, as Ted says. The reason the fluid works is it has the same refractive index as the film- so when it fills in the tiny cracks and scratches, it gives you the same sharpness available from the film. There is no diffusion happening.
Finally, while wet mounting with a flat-bed gets you the advantages of less retouching, it can't touch the quality of a real drum scan, with its lower noise, non-existent flare, and perfect focus every time over the entire film.
As with everything, check your options for yourself before committing to any one solution.