I've heard about that. Didn't they send one guy like $15,000 worth of extra speakers?
That's a heavy credit card charge. I wouldn't be happy with that, especially if I had to pay interest on that total before Sonos could refund my money. If I were them, I think I'd offer a 50% discount on the extra items. It would save them shipping fees, it would move merchandise, it would be good for PR, and it would prevent the expensive gear from possibly getting damaged during the return process. It's not like Sonos can sell them as "new" anymore.