A couple of high priced sketch covers: look at this Miller/SienkiewiczBatman cover sold for $7,2k, a Joker cover by Kim Jung Gi for $5,5k.
There are also a pair of funny results: one of those 20 seconds Batman doodles by Bruce Timm went for $1,2k, an Hellboy head sketch by Mike Mignola for $2k.
Heritage Weekly Auction: $17k for the Moon Knight cover by Carl Potts, which would be the record price for the artist if you don’t consider the art done in collaboration with Jim Lee. $10k for the Venom cover by Liam Sharp, $10k for a rare, early Invincible page by Cory Walker.
Surprising prices for the Joe Sullivan collection, only $400 for a 1956 Dick Tracy daily, only $700 for the Snoopy sketch by Schulz, $400 for the sketches lot with a rare Hirshfeld sketch, $150 for the sketches lot with a very early Garfield by Jim Davis.
Sempé Auction: I found out today about this auction on Comic Art Tracker, 20 illustrations by Sempé sold, with a total price paid of €270k. The highest price was €45k for this lot.