In theory, you can take them back and try your luck again. Looks like "shipping wear" where they rubbed against each other before they were packaged for sale.
You could take a file and gently dress the high spots down, but also being careful not to alter the taper that's already there.
As long as they fully-seated in their tapered bores, were fully-torqued down, then things would probably work good.
Only thing might be that if similar marks were on the ball end of things, before they were assembled into the socket. That might cause some wear issues internally, which could ultimately affect longevity of the item. But it might take 30K+ miles before anything was noticed, when a normal joint should last much longer. Kind of a crapshoot?
Consider that when the ball studs were machined and then heat treated, at the end of that production line, they probably fell into a bin where they were laying against each other. Then they were transported to another line where they were assembled into their sockets. Another gin at the end of that production line. Then they would be sent to quality control and packaging areas before they went to the company that contracted for them. Probably sold by several companies, in their own respective packaging? Same process whether done "local" or "foreign".
Don't sacrifice ultimate longevity just to get the car one the road sooner. On the other hand, the next ones you might get could be worse.
Remember one thing, the quality of the item is affected MORE by the specs the purchaser gives the vendor to build them than where it might be built. USA-made products, made to mediocre specs can be worse than an off-shore part built to higher specs and material standards. Sure, there is and has been some poor stuff from over there, but it's more related to what the vendor wants to pay for than anything else.
A few nicks might be easier to understand and pay for than a part with the many nicks/indentions which your part has. I know these are items which might be difficult to locate locally, but IF that was possible, it might be better to do it that way. This way, there will be "other eyes" on the part to see why you don't like it, at the same time you're looking at it.
At the very least, call them and talk to them. Tell them where you've got the pictures posted, seeking input, and see how they respond to the situation. If they seem to be interested in customer service, ask them to inspect the replacement items before they are shipped so you get a better part. After all, you're just wanting to do what's right for your car and safety.
Keep us posted on how things progress.
CBODY67