I ordered mine from PartsCheap along with the engine cover, both OEM: http://www.partscheap.com/Default.asp
We have a couple of options on eBay but I really didn't like the look of most of them. The OEM version seems to have more quality than others. The downside is that we just have it for the front doors. But from my point of view is not really a problem.
Installed them myself this weekend on my car and it looks very good!
The installation was easy, just required a little bit of patience to measure both sides to align them on the same spot.
I will take some pictures this week and post here!
Really recommend it.