Why is this flash selling so cheap?

Http://www.ebay.com/itm/Professional-AF-Flash-ZE-SB700-For-NIKON-D3000-D3100-D5000-D40X-D3X-/271162387505?pt=Digital_Camera_Flashes&hash=item3f2289ac31

All other listings for it go for 200+???

См. статью: Why is this flash selling so cheap?