Willi -
I have tried to stay within the $5-10 a card range. If I get one, great, if I loose one - well someone else wanted more badly than me and probably will appreciate it just as much. However, I have tried to win a few remarkable cards of late -- but my wallet isn't that deep.
I am also hoping for the stories. The note on the card that can help me get a bit of a lead on who wrote the note - where did they serve - did they survive the war? That has been alot of fun for me.
While I would love to have a few autographs and such of the aces, I am content with finding an interesting image and then finding the story behind the image. Therein lies this History Major's enjoyment.
Best of luck in your searching - Ritterton