I paid about $500 for a '53 Topps Satchel Paige in very nice shape. Almost the same for a Koufax rookie, also in Very Good-ish, maybe a little better shape.
I picked up a beater '49 Bowman Paige for a song, and I'd like to round out the Satchel Paige collection with a '48 Leaf Paige, too, but that'll probably cost me a bit more than $500
