Done a little searching and it seems a couple of companies are selling on Ebay from UK (another example: http://stores.ebay.co.uk/Angelsales-London) with shipping to US for around $18 total. Don't know what taxes you then need to pay - I have only bought in the opposite direction and generally avoided paying for additional taxes for small value items.

My 2008 328cic has a grill exactly like this "look." BMW does this on other autos. I think it looks great! Definitely looking into this for my 3.0.