Does anyone know anything about this shock?

[craigo]

http://www.ebay.com/itm/Yamaha-YZF600-TDM850-YZF-R1-FJ-YSS-Mono-Shock-Absorber-/290538197937?hash=item43a56d13b1&item=290538197937&pt=UK_Motorcycle_Parts&vxp=mtr

YSS shock for under $400 USD. Anyone ever hear of them?
I have no intentions of buying it but thought some here may know about it or are interested in an in-expensive replacement for their rear shock.

CraigO