Can we have a long-term feedback on the "slider clips" (each Front door needs 2 clips, and each Rear door needs 1 clip).

There are so many sellers at RegulatorFix.com, ebay sellers from the USA and ebay sellers from Germany, the UK etc.

If people give long-term feedback, can you list the exact link (name of ebay seller) where you get them from?

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT