Are there alternatives to ButterflyLabs?
There are USB ASIC mining equipment on ebay from the company ASICMinner called Block Errupter listed under which is in hand and able to ship imediatly however it is $150 per 333MH/sec which means it would take 2k to reach 5GH/sec. You can order a 5GH/sec BFL for 2.6k and have it shipped today on ebay. However with the price of Bitcoins droping it would be wise to consider profitability using bitcoinx before making a purchase. Also you can contract out your mining http://coinminer.biz/ offer a reasonable rate for a single year.