It is what it is. They just took the factory 19's and chromed them. You pay $700+shipping 2x+your matching oem wheels (like a core charge). With shipping your getting close to $1000 + your wheels. For about $1200 you can bus some aftermarket wheels of different styles. In this example its cositing you $850-$1000 to have you wheel chromed (essentially).
I've had this on my eBay watch list as well. There's 19 and 18" chromed wheels out there on ebay for the Acadia. But for me by the time I factor shipping, it came close to aftermarket wheel pricing. Seems too expensive just to chrome your wheel.