I don't think it's a blatent deliberate scam, more a case of unfortunate delays making the market lose confidence.
I paid by PayPal, 2 Singles ($1386) in order to get some protection, when it became obvious that the product would not ship before the PayPal 45 day rule I raised a ticket stating that I specifically did not want my order cancelled but I was opening a resolution ticket to raise my concerns about potential non delivery of product.
Paypal didn't respond but almost by return I was issued a credit note by Butterfly and my order cancelled, a few days later and my PayPal account is refunded in full.
Yes, I've lost my place in the queue, but to be honest - if there are 30,000 pre-orders and an additional unspecified wait, then the advantage of getting into ASIC mining has passed and the economics do not work. It's a shame, but this is the best outcome. I was too late to the party, and I chose the wrong supplier.
IMHO The smart money bought shares in ASICMiner, but alas they are no longer available either.