There is an innocent explanation for everything. Here, this PSA 8 1965 Ernie Banks went for 5x that day (723, typically sells around 150 on a good day) due to two bidders not having the patience to wait for the next one to come along or to find another of the 10 then available. Or maybe it was the flowery description.
http://goodwinandco.com/LotDetail.aspx?lotid=2375