Well let's say I bought a handful of the 25GH/s ones from Butterfly instead. I'm trying to look at the big picture here and determine if I'm missing anything, or if this could really be profitable, if made the capex investment.
Like I said, getting them to your doorstep is the issue. Butterfly labs does not have any 25 GH/s units that are currently shipping and no one knows when they will start shipping. If you order now you will have thousands of people ahead of you in the queue.
BFL is shipping a few of the Little Singles right now but it's just so painfully slow. If I were you I wouldn't buy from BFL. I would get KnCMiner because they have a better $/Gh and they might be shipping right around when BFL clears its humongous backlog, hopefully with my order not lost somewhere.