This is a question:
Someone won 891 1964 Mantle Topps giants in Lelands last night for almost $40 per card.  Description of condition:  10% VG-EX or lesser, 25% EX, 45% EX-MT, and 20% NM or better.  That quantity represents about 20% of the current PSA graded population.  Can someone help me understand what a potential reseller is thinking?
Here is the lot:
https://auction.lelands.com/bids/bidplace?itemid=98247