[swarmee]

I have bought two 1969 Mantles recently...both on eBay. One in a lot with 10 other 1969 Topps Hall of Famers for $35 and one in a lot with two other Mantle cards and a Musial for $66. How did I get them that cheap? Neither lot had Mickey Mantle in the title. One of the listings got 17 different bidders, while the other probably had 4. Very few people actually saw these listings. One of the lots had Mantle spelled "Mantel" and the other didn't even show that the card was in the lot (except for his hands gripping the bat and the Louisville Slugger logo further up the card). eBay and even REA/major auction houses are places where imperfect knowledge reigns. Not everything is listed accurately, and many sellers suffer from poor/incomplete information. There is definitely a place to turn a profit just by reselling on eBay.
The real trick, for most people, isn't buying low and selling high. It's doing those and not siphoning profits off into a personal collection. ;-)