Unfortunately there is no complete and up-to-date price guide to OS Wackys or older non-sports cards, so it's hard to tell what is the going price. The guide in NSU doesn't list anything old, and while Beckett has a bi-monthly Vintage Collector guide for sports cards before 1980, they offer nothing comparable for non-sports. I guess there is no market for it?
I've been working on finishing some of my childhood football sets, and what I have noticed is that the prices are really high at the shows and on eBay, but the guides aren't reflecting those prices. IMHO, a lot of that is due to perceived grading. The guides give a low and a high range for near mint, and those cards are hard to find in vintage because we didn't protect them when we were kids - we played with them, carried around to show and trade with friends, etc. But there are a lot of sellers on eBay who either don't read that in the guide, or their eyes are just deceiving them into thinking that they have a near mint treasure. Dinged corners, minor creases, off center 80-20, and scuffs do not a near mint card make, but I constantly see items being listed above and beyond the high range NM price when they're in that kind of condition. Really to match the guide, these cards should be listed at about 40-60% of a NM card. I think the hype of getting that card that grades a 9 or 10 has overinflated the prices of every card and most sellers think they're selling that one golden ticket card.