There doesn't appear to be an E83 classifieds, so I guess it goes here.
I have another BRAND NEW KW Variant 2 Inox (Stainless Steel bodied) Coil Over Kit for the E83 X3. Retail is $2,300ish, but you can find them easily for $1,999. I think the lowest I've seen is under $1,800.
So I'm selling for $1,600 SHIPPED. I'm open to offers. EDIT: $1,500 shipped through the end of 2012.