So what I think I understand after reading this thread is that if you paid with BTC, then there is not much legally that can be done? Just wait for Amir to give us 50% in 3 months from several weeks back?
No. If you didn't pay with Paypal or Credit Card it will be harder to get your money. Doesn't matter what you paid with.
The law says in the States that you can get a refund at any time if you have not received the merchandise you payed for.