I think the only reasonable discount you will find is at a salvage yard.

Non OE I would be prepared to see a seam gap. I used aftermarket replacement grill when one of my grill inserts was AWOL one day. Love the inserts great value satin finish black but they are not a perfect seamless fit like if I had paid 6x the price. I'm ok with it.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)