Can anyone tell me about the overall quality of SGF flex disks? It's time to do them on our 560SEL, and I found the disks for $54 on eBay, vs. Febi ones for $96 here, of or the Meyle for $83. The seller on eBay claims the SGF are OEM.

Thanks!

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Henry Bofinger
1989 560 SEL (black/black)
2001 Audi TT Roadster (silver/grey)