I'll ask Danny Richie. He'll know what to do.
Seriously, though - any company selling a speaker at the level of the LS9s could go out of business. It happens all the time in the high-end audio world. Then I'd be in the same boat I would be with AV123 except I would've spent a lot more to get there. I have to think that with a part number and google, I can find a replacement.
When it comes to the LS series, I was serious about the "ask Danny" solution. For the other speakers (I have two pairs of ELT525Ts), well... I got a good deal, I'll take my chances.