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I got this exhaust off ebay from china, it was only £92.00 so I thought it was worth a try.
It arrived within a week well packaged and as described.
Fitting it was quite difficult as it isn't an exact fit and needs a bit of brute force to get the support strap onto the existing mounting. The clamp that holds the exhaust to the manifold is also very poor quality and snapped when I tightened it up, so I had to buy another one from the local bike shop (£7).
Also you lose the bump stop for the center stand, as that is welded to the original exhaust and this one doesn't have one and now the stand hits the chain. I removed my center stand for now but plan on fixing something as a replacement bump stop as the center stand is very handy to have.
All in all not a perfect item with a few draw backs but for the money it is excellent and it really does sound nice, not too loud when cruising or ticking over but awesome when you give it some.