Have not bought from this seller. Looking at the listing this appears to be a typical Japanese mass produced knife. Pretty good steel but I am not crazy about the inexpensive slab handles. What the seller lists as
"Damascus V10 gold steel" is more commonly known as VG-10,
a stain-resistant steel which is used by many Japanese manufacturers. Reading the the language challenged listing this knife may be a part of Kazuyuki Tanaka lower end factory line. Until now, I have only seen pictures of Tanaka custom line, which while nice, also uses better steel (R2) and is priced substantially higher. I don't kniw how this knife is related to Tanaka but maybe someone knows more and will comment. IMHO, this knife would be a good deal at $70 or $80, while at the asking price of $120 you should also look at other knives. If you are looking for a 165mm Santoku here are a couple of other knives I think are worth a look: The "Gekko" line as well as the new Shiki line with nice walnut handles here:
http://www.japanesechefsknife.com 
The Yokoama, Sumagoro, Shun Classic and maybe a couple of makers here, all available in VG-10 if that's what you are looking for:
http://www.epicureanedge.com/shopdis...e=1&filter=yes