I have the complete EGB series and most of the RGB series on vhs tape, if anyone is looking for episodes email me at thickets@uniserve.com
I don't know when I'll be back to this board so posting a followup here may go unanswered.
http://mypage.uniserve.ca/~thickets/spamcart.htm
http://thickets.50megs.com/ghostbusters.htm
Quality varies episode to episode but many of them are very good - mint condition taped directly from the TV in stereo on 4-head VCR with commercials edited out as they were broadcast.