With all due respect, mini-disc is now an evolutionary extinct branch of audio technology.
I suggest even buying lowest cost 2nd hand off ebay, would be a false economy due to the age and 'reliability' of disc transports and batteries..

[i.e. Awai used proprietary rechargeable batteries which are now discontinued
and impossible to source.. that's me buggered then..]

I had 4 different recorders and always had reservations about using them for any serious applications
where HiFi quality was paramount.
While minidisc was convenient, they were a flawed compressed lossy audio concept,
and are now well superseded by superior sound quality and relatively cheap uncompressed lossless recording devices
like the Zoom H1.

I'd agree a well produced minidisc recording could sound very good
for domestic & in-car listening conditions
but technology has moved on immensly since the late 1990's..