If you don't want to go through the hassle of return, I would ask for a reasonable credit for the damage. It's a way for everyone to move down the road.

You should be fine gently bending the corner back (gently being the operative word).

Some sheet metal bending pliers (about 3-4 inches wide smooth jaws) should be used, especially if the area will not be concealed after installation.

You can also clamp the area between lead sheets (or even wood pieces) to bend it back.

I agree that it looks like it can be straightened. Just make sure you pad it before applying any kind of force, and that you use something that will distribute the bending force across the whole corner. That means the metal bending pliers brickeyee mentioned, or one or two visegrips clamped around a couple of pieces of thin wood.

Here is a link that might be useful: Metal bending pliers

Using a block of hard wood as a dolly under the corner and using a soft face or urethane deablow hammer from the face, the bend can be corrected quite well. Hit gently from above on the bends, not out on the corner. An auto body person can do it.

Hi everyone,

Sorry to have been silent for so long on this, and thanks very much to everyone who responded. I tried to respond about a week ago, but it looks like it got lost in cyberspace (?).

At any rate, here's the resolution: I contacted the retailer (Overstock.com) to let them know that the sink had some shipping damage, and before I could even suggest a partial refund, they told me they'd ship a replacement. (!)

So thanks very much to Overstock.com, the new sink arrived this week and is perfect. They told me to "dispose of" the old sink, so trying to work that out now...I have a buddy here who's working on his house who may be about to get a new (slightly dinged) sink.

I'm very pleased (slightly stunned, in fact) with my experience with Overstock.com, and will definitely use them in the future.