My 75RI has a natural ash body with rosewood fretboard. The pearl block markers look superb and I much prefer it to the maple fret board version.
The thing that sets the 75RI apart is the neck. Mine has the best neck of any bass I've owned or played. Much more to my taste than the fatter neck on the 74RI that replaced it. And much nicer even than my 2010 US Standard Jazz. I've owned my 75RI since about 2008 and, although I only gig it at "posh" venues, I'd hate to have to part with it. It's 99% as-new and I try to keep it that way.
To me, they are a bit special so, in a way, I'm not too surprised that they hold their value well.
Maybe not just as well as some sellers hope.
Frank.