I was given a MINT PG-380 as payment for a job in the late 90's. I mean, the thing had never been played - had the Casio tag/card still hanging on the tuning pegs and the registration card still in the case...the wammy bar was even in a plastic wrapper.
I was happy to take it because I remember when I was working at music stores in the late 80s I wanted one SOOOOOO badly...but $1600 was what I typically lived on (rent, food, transport money) for a YEAR while I was at college (rent, late 80's, portland Oregon, shared student housing: $85 a month! No fooling!). So $1600 sounded like a FORTUNE!
UNfortunately, the unit that I got had the "Capacitor problem": Apparently the caps would die over time if they weren't put to work...typical. So I only had 5 strings of Pitch to MIDI conversion...but those 5 strings worked like a charm. Then it went down to 3, then 1. I did try all of the tricks I learned to try to get the caps to refresh, but that never worked. Eventually purchased a bunch of caps to do the replacements....then decided I'd see how much it would fetch as-is on ebay and was pretty amazed at how much someone was willing to pay. He was elated at the purchase, I was elated at the sale, everyone was happy.
There are really, really cool instruments.
If I recall correctly, Bob Weir was playing a version of this instrument for a while but with a Modulus carbon fiber neck on it..... (or maybe the guts put into a Modulus body....)
Elantric - was the the Ibenez from around the same time that had the cool wammy bar which acted as a MIDI pitch bend controller - that was the first place I remember learning about the Hall effect...I recall one of the techs at the store I worked at showing me a tremolo system which converted wammy bar motion to MIDI using the Hall effect....I know it wasn't the Casio.....