I bought the ebay kit. The aluminum is nicely machined and anodized. The shift shaft appears to be well made with a roller bearing in the hinge for smooth operation. Also the hardware is quality material.
I was a bit dissapointed with the plastics that they used for the bushings though. It appears to be a nylon. I had some teflon bushings made to replace both the cup bushings and the washers that ride between the shaft and aluminum housing. It should help to reduce friction in the linkage and improve effort and feel.
The teflon bushing is on the left, the stock on the right.