I never get this response. With that line of thinking:
* Cars are vehicles meant to get you around it, not looked at.
* Coats are meant for keeping you warm, not looked at.
* Houses are for providing shelter, not looked at.
Having a choice, would you drive a beat up, rusted old car? Wear a dirty, discolored, frayed coat? Live in a house painted the ugliest combination of colors, in old, faded paint?
Probably not.
Not to say that "war-scarred" instruments aren't cool or don't have character; they do. But most of the time, we want to put those scars there ourselves, or buy an instrument KNOWING they're there. OP obviously thought he was getting a scar-free bass. Those scratches/finish cracks are pretty severe and it's reasonable to return it.
That being said, if it plays really well and was a good deal, I'd just hold on to it and have it refinished at some point.