Found another complete minty set off a '13 600 for $515 shipped. One little 'trick' that I sometimes do when buying anything on ebay, is offer the seller a lower price. The small, private sellers are more willing to work with you than the mega-ebay-sellers/stores that try to jack up the prices. If one seller sells rims for $650, then another seller lists his for $650 and then they all start listing them for $650, you're kinda screwed. That's when I come in and list the same item crazingly low. EBay's a game of sorts. This same seller is offering me a set of '13 1000 rims for the same price.
That's pretty good. I've been watching for the past couple weeks and ended up with a rear complete with cush/sprocket and rotor for $200 and a front without rotors also for $200 (listed at $240). Now debating picking up used OEM rotors or upgrading to aftermarket.