Well that is the problem. They are PRE-SELLING devices they don´t stock or even have.
They said shipping started, but its a lie. Not a single 2013 order was yet to be received. So they just say this so PayPal probably does not close their account.
You can pre-sale, if units are on the way, and you actually have them.
Butterfly Labs did not even produced the units yet. This is the problem here. Very soon they are going to receive a heavy lawsuit or probably some federal intervention for scam.
For me, nothing justifies taking months to send or deliver units they are supposed to have already.