Sorting Out 2010 Wheel Rims

I nicked one of my 10-spoke OEM rims. The Ford parts guy assured me my number is AR3Z1007E. The list price is an amazing $742!
So I bought a repaired one on Ebay for less than half that. It was perfect, but the color in the pockets is a charcoal gray, not the black that I have. The place that I dealt with only knows about the charcoal version and the web-listed models use Hollander parts numbers. I see another 10-spoke version in some internet listings---can anyone sort this out?
And why is one version twice the price of the other?
 
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