Catwoman #23, featuring the first appearance of the new Joker's Daughter, is now a $15 comic on eBay, though some copies are selling around the $10-$12 mark. For a $2.99 comic published on Wednesday, that's quite a rise.
Some stores may still have copies at cover price of course.
Just not many.
It's also in advance of the release of Joker's Daughter #1 for DC's Villains Month, which has topped $30 for preorders but has now settled in at around $15/$16 on eBay.