Regardless of whether or not we think the OP overrated and may be a bit nit-picky vs. did the seller misrepresent the bass, the one thing that many of us are missing here is you really have to read between the lines and take the way someone describes a piece of gear with a grain of salt. I've seen craigslist listings where it's described as "like new" but then you read on and/or look at the photos and and it's telling you a different story.
If you're naive enough to just go with the category the seller has chosen and leave it at that, I'm sorry to say that you almost deserve what you get. If you're someone who's super worried about little nicks on the back of the neck like the OP, then do yourself a favor and SPECIFICALLY ask the seller something like, "Are there ANY dings, no matter how small on the back of the neck, because that would be a deal breaker for me", and also ask for additional pictures showing this. If the seller says nope, there aren't any, but you receive the bass and it has dings in it, you now have absolute recourse. If you ask the seller, "Has the bass been modded in any way, pickups or electronics modded/swapped, etc?" and they say no but the bass arrives and you remove the pickguard and it's a rat's nest under there, you have absolute recourse.
If you're someone who is REALLY picky and absolutely MINT, untouched, not even a smudge or scuff you really shouldn't be buying any used bass that you dont have the opportunity to put your hands on the instrument in person, or the place your buying from has a return policy that will allow you to return the instrument for any reason.
I have my own things that keep me from buying something off line from Reverb. Usually I steer clear of buying ANY guitar or bass sight unseen because I've learned my lesson. I know what to look for and what questions to ask because of both good and bad experiences and from learning about what questions to ask and what to look for. Still, this doesn't guarantee 100% success every time, but it puts the odds in your favor from getting burned next time. Like I said, I usually just steer clear of buying anything, even with basses in the Classified section on this site. I've corresponded with some sellers and ask specific questions, and if my gut isn't feeling it, I pass.
It shouldn't be this tough, but if you're naive enough to know that there aren't people out there who are going to fudge on the condition and hope you wont notice, or wont go through the hassle of filing a claim and hopefully getting a return, then dare I say you're probably gonna get burned at some point.