[familytoad]

One thing about this set to consider is that some of the "tough" cards can be deceiving. You do see a handful of tough cards for sale on occasion because people are constantly starting/stopping the pursuit of the set.
If you give up on a set, you may be able to break even quickly by liquidating the tougher cards like Upp/Mitchell/Sweeney or the aforementioned Overall.

9 of a card at any given time doesn't seem too populous. Sometimes that number might dip to 2.

And let's give this thread some credit for creating demand which may bring out both sellers and buyers :-)