Sorry to hear.

While you should not have to on a new frame lock in that price point, a proper cleaning often does fix many of these issues. If there was a piece of grit that got trapped between the washer and the blade, it can have a serious affect on blade centering...especially on frame locks for whatever reason. It should not have been delivered in that condition nonetheless, provided it is factory new from an AD. Benchmade is also very good at fixing issues promptly.
If fit and finish is something you are really interested in (ex: absolutely zero blade play now, a decade from now, and ever, or a perfectly centered blade with a lockup meeting precise spec), the Chris Reeve Sebenza is probably your knife (or a custom folder). The fit and finish quality of their products is really the industry benchmark.
I would not let this experience speak completely to Benchmade as a company. As a general rule, they deliver excellent products. And while that certainly does not excuse them here, it may be reason to give them a second chance, or consider buying one which you can handle in person before paying.
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And I doubt that if the OP were making this up they would go through the effort of expressing his displeasure. I don't see a need for pictures nor do I think one needs a picture, a video, or a witness' signature notarized by the nearest judge to verify their experience. Attacking someone's credibility is only discouraging open and free conversation and it is misdirected. If frustration is going to be directed in that fashion, then it should be directed towards Benchmade and/or the dealer which sold the knife.
My grandmother smoked for a better part of the century, saw the doctor about once a decade, ate mayo like it was pudding, and saw triple digits. Does that mean smoking is safe? No. It just means that not all outcomes are the same. Owning X amount of knives doesn't mean that the full sum is or is not the same (unless someone here happened to purchase every Benchmade ever made, and I missed that memo).
Benchmade makes great knives, but they do sometimes have failures in QC...just like most every other brand. Certainly the moral of the OPs story is that seeing a knife before you can buy it has some value, even if you are paying a bit more (or buying from an AD with a solid return policy).
And there were much better ways to voice some of the opinions in this thread.