Not questioning the legitimacy of the auctions one bit, but I'm truly baffled why people would pay some of these prices for raw cards that have absolutely no chance to grade higher than advertised if sent in for grading.
Take the 1956 Topps Clemente EX-MT card that was shown as selling for $390. Here's a scan:
Average VCP for a PSA 7 is $386.93. One sold on March 19th for $354. One sold on March 1st for $382.59.
Clearly the raw card shown is NOT a PSA 7 (6 at best, and that's debatable), yet it sells for more than one?!? Huh?