Re: Charvel Model 4
One of the better bolt on superstrats of the mid 80s, AFAIC. IMO a better product than your average Kramer or later 80s Ibanezes, etc.
I liked mine, but being a Gibson-type guy I sold it. It was well built,solid. Heavy as I recall. The Jackson trem was pretty good. Good player. I did not care for the indivdual pup selectors (on/off for each pup) and I did not like the pups themselves, but many Charvel/Jackson fans do.
As long as you get a decent piece of wood, you really cannot go wrong with any of the old Charvels.
I have no idea about pricing these days, but there is a Jackson Charvel forum. I'm sure some of the more knowledgeable guys will pop in with the web addy.