Feel free to add...
The friend who suggested this line of discussion (and who would be in a pretty good position to know, BTW) mentioned two short-lived ABC daytimers:
Make a Face and
Window Shopping. Interestingly, both have home versions, so at least there's that much tangibility.
Without going through the EOTVGS and making a list, I'm only coming up with two more from the seventies: The Saturday morning show
Runaround, and a syndicated version of
It Pays to be Ignorant (actually a scripted spoof of game shows). I watched
Runaround every week. I only saw
It Pays to be Ignorant once. Can't remember the details of how (must have been while traveling), but I remember it being very funny to a 13-year-old. And yes, the original
Sale of the Century would be very high on my wish list. I have memory of the syndicated version with Joe Garagiola playing with married couples, but not of the daytime show. Either would be awesome.
I've been fortunate between UCLA and the various Paley Centers and visits to the homes of collectors-who-must-not-be-named that I've had the chance to see some pretty rare stuff, so I can tell you with confidence but without details that there is a
Baffle. There is also a
Wizard of Odds.
No one ever found a complete episode of
Spin-Off, did they? Just a few scenes in promos, and the vague awareness that the master tapes are still around?