Currently, Barnes & Noble are running a Buy Two Get One Free offer on DC graphic novels. Good deals all round. There's only one deal per customer though, so you'll have to choose well.
Like these three pre-orders.
Absolute Batman And Robin, already down from $100 to $60.
The Death And Return Of Superman Omnibus also already down from $100 to $60.
And Absolute Green Lantern: The Sinestro War also down from etc etc…
Put them all in the deal and you can get $300 worth of graphic novels for $120. 60% off the cover price, with free shipping. That's less than retailers pay. Which includes Barnes & Noble, they are operating at a loss here.