One of the biggest challenges for me when it comes to pre-war cards is the relative lack of supply (which I realize is good for value) of the cards I want to add to my collection. I lack the patience to assemble sets, and the financial resources to spend money on commons, so I'm focused primarily on key HOF'ers but finding (for example) a E92, E102, or E101 Sam Crawford in VG-VG/EX is really testing my patience, so when I do I'm sure I'll overpay...just so I can check it off my want list and move on with my life.