Sure, that occured to me. But it might also reflect high production due to popularity, or just high production. It is just a student violin. Like my Cecilio CVN-200, I see CVN-200's all over the place and I assume they are all as good as my own, which is to say, not great, but good enough for the price.
The Kohr K500 is sold at Fiddlershop as a flagship student model and it sounds pretty good. If the 2006 model is just as good, it might be worth checking out.
Also, the K500 I'm seeing may actually be the same one being resold. It's on eBay and I first was watching an auction where it went for about $220. Then I saw another one that went for $150. Now I'm seeing another one going for over $500 or Best Offer. They all look alike, but I was thinking it was just a production run.
If they are all the same one, then obviously it is to be avoided. They are not posting the serial number.