1970 E-Body radios – AM/FM and AM

Hi, It was either in this forum or electrical/wiring. When I got my Challenger 9 months ago it had an older aftermarket am/fm radio cassette player in the dash. It originally had an am/fm radio. Would anyone have a an idea of going prices for used originals, for am/fm and am? Radio could be working or non working.
Author: DY31970