So the Mclaren MP4x is on sale for 50% off today at 600G. Sounds like a great deal but I wonder if it's really worth it. Only have 660 G and am in the middle of One on 1 which is surely going to cost some Gold as the days progress. 

Does anyone know how many series the Mclaren is in and at what point in what series it shows up?

Hate to turn a deal like this down but if it's a year before I can afford the other cars in its series, then I'll wait it out and Flog along.