I busted a upper cuff strap (tooth portion) on my 700's, while in Breck. Being there's nowhere in Summit County to find (Deeluxe) parts, I went to a bootfitter (Surefoot), and they replaced the strap with ski boot parts. Not the prettiest, but it works. With no other option, $20 was a screaming deal.
Keep in-mind I did have to go to several different places before I found a shop that would repair it. So you may have to check around as to who fixes boots.
On a side-note, I busted a 700 toe buckle, a few weeks ago. Again, in Breck, I went back to Surefoot. Back in business for another 20-spot.