Just a few thoughts..
If it is a close-out, does that mean the helmet is being discontinued? May make finding parts of visors for it later difficult.
They did not mention which SNELL rating it had. They have changed their rating system a couple of times over the past few years. The most recent one to comnply more with the european standard and to address the questions that Flightcontrol mentioned.
I do know of only one person that has one of these, and they said it was a noisy helmet.
I personaly would not buy another KBC myself, they are as mentioned ,"O.K..."
but now I am spoiled with my Shoei RF1000, which is alot quieter than MY old KBC and alot more comfy. (And Pinlock makes visors for it)
So, if you want to spend your money on another "just OK " helmet, it does sound like a good deal, but there are quiet a few makers now with helmets in that price range that might offer more features.