I looked into it about 23 years ago. I decided the main thing I wanted to try were the Carl Zeiss optics.
I got a Yashica FX3 Super 2000 body and a 50/1.4 Zeiss Planar to go on it. The lens was great, but not really any better than any other 50/1.4 I'd used. (incl. SMC Pentax, Nikkor, Canon, Zuiko) They're built heavier and with firmer damping. Not necessarily better, on either count.
Skip it, is my advice, and refocus your GAS elsewhere. Maybe a new lens for digital... or some film & processing.
My Cameras: Yashica Electro 35 GS and CC, Rollei 35, Nikon N90s, FG (2), FE2, and L35AF3, Minolta Freedom II, Olympus OM1N, OM10, Stylus (mju) and OM-D E-M10 III