Well, cash over style, I found a post somewhere on the Intarwebs about an eBay seller named rocket_keys ( now 1010keys on eBay ) that sold two cut empty shells for $39.99 shipped. It was the path of least resistance and was in the ballpark price I was willing to pay.
The keys are fully functional and the shells are solid. Everyone who said the build quality, plastic feel and overall crappy design were correct. The shell is a tad larger than the original, which takes a hair more effort to press the buttons. The edges are not smooth where the top and bottom come together, and as mentioned, the overall feel is equal to the cost: low.
But at the end of the day, I was looking for inexpensive and functional, just not high quality. You only ever get to pick two, right? This was an acceptable compromise for me. If I had more money to spend, I'd probably get the OEM keys, but with the cost of the OEM shells being like $40-$60/piece, plus cutting fees of $20-$60 each, plus the driving around I'd have to do to get it done, two new keys (both broke around the same time) would have cost me $150-$200, and it just wasn't a place I was willing to spend that much when a less expensive functional alternative existed.
cduluk was absolutely correct -- the fakes suck. But they work, and if you need a cheap alternative, the 1010keys eBay seller is a functional alternative to the nicer, albeit more expensive, OEM shells.
I'd love a set of keys like the cduluk customs, but I have other places my time and money need to go at the moment. Happy Recession!