No particular reason. I just like the black color better.
I'm not worried about ordering from eBay, the buyer protection there is excellent. In fact, as a seller, it might be too excellent since almost all cases are biased against sellers.
Now I think I might have been a little hasty. I bought my lens from a seller with free DHL shipping so I could get it faster, but after I ordered another seller responded to my "Make an Offer" to sell one for $340, but it was too late. I made a lowball offer of $275 and he responded with the $340.
On the other hand, that seller was going to send it regular post, which would be about 3 weeks, so the extra money was sort of worth it.
These f1.1 lenses seem to be in mass production with many sellers, so if I was really ultra-patient I might have waited 6 months until cheapo used ones appeared. That's how I got my Jupiter 3+, I bought it cheap as a used lens.
But I'm a nut, I like to indulge myself with photo items. It's one of the few vices I have left to me at my age. My wife views it as hoarding and insanity, although she will go to Japan and drop a couple of grand on a silly designer bag which infuriates me.
I'll probably get this lens, use it for a couple of weeks, then deposit in the vast pile of other expensive lenses that I haven't looked at for a decade.
But having this vast pile of lenses is a good thing. I'll occasionally pull out some long-forgotten lens I have and discover it is now worth a small fortune, after I paid almost nothing for it in, say, 2002.
eBay used to be a paradise for finding rare items for tiny prices if you knew what they were. But now the internet has made every bozo an expert and the prices of everything has skyrocketed to la-la land.