Batgirl #1 is currently in an eBay auction for $16 with 6 hours to go.
I can't help but think that the imminent arrival of thousand of copies bought by people in store will have an imminent effect on this. But if you can get the price, why not?
Detective Comics #1 and Action Comics #1 are both selling at $5 with the Jim Lee Action Comics variant at up to $20.
And from last week, Justice League #1 is $10 with the Combo edition at $15.
Meanwhile there is frantic activity between retailers who have found that preorder in their stores have sucked up all available copies of certain relaunch titles, leaving very few for the shelf, that are suddenly in demand. Animal Man, Swamp Thing, Hawk & Dove, Batwing, Men Of War, Static Shock…