I think i have a pair of these in the garage
Kufatec are the cheapest place I have found them online;http://www.kufatec.de/shop/de/oem-parts-sonderposten/original-vw-bremsfeder-bremssattel-r-line-r20-r32-r36Price is each. Still not cheap, so I am intending to spray the S3 caliper retaining clips I have, and fit a vinyl sticker. I did purchase an original set of R-line retainers, but am thinking the painted / badged S3 combination might be just as good.