I highly doubt you will find any left over 2011's or older. There is no 12's any place and i got my 13 back in March and it was a REAL problem to find that. I had to drive 5.5 hours to pick it up from Cernic's in PA. And that guy called ALL over the country to locate me some or do dealer swaps. Then he said every dealer that had them in their stock was not willing to trade.
We found about 1 in stock in dealers in a few states. MA had one, Arizona, Texas, Florida, Michigan, and a few other mid west states. The next shipment for 13's is due in June some time so all these dealers will get 1 more then thats it for the 13's. Only 400 and some change where even produced.
Your best bet is to search E-bay or somethign to hope a clean 10 or 11 pops up. Then try to talk to your back about financing it or pay in full cash if you can do that. But i LOVE the way my 13 rides in comparison to my friends 09, 10 and another guys 11. It's far more aggressive stock. ( people argue there's no change but talk to Wamilton and you'll get that answer figured out fast lol ) Good luck!