So how many people pre-ordered a batch #2 and probably loses their money?
Well you mean because of difficulty increasing enough to make the machines never break even or turn a profit long term?
It's not a scam. The fact that 2 or 3 exist is proof enough, if they can build a few they can build hundreds, or thousands. The chinese are masters of reproduction.
The real question is, is Avalon team financially sound enough to make it happen and turn a profit somehow to keep the investors and customers happy? If they wanted to run a full scam they wouldn't make batches, it would be open season and they'd just take orders they couldn't fullfill for months like BFL has done.
Right now they have a goose than can lay golden eggs, they just need to get them out the door faster. And they need to talk more. If it's one thing BFL does better its communication, even if its trolling and blowing smoke up peoples asses.