it seems like every power supply I see doesn't have a rating or it's a dodgy chinese one. my Raspberry Pi came in on Monday but I'm now waiting on cables and I'm still bumming around for a proper power supply for it. Adafruit's regulated one is out for another couple of weeks and newark's has a lead time warning of 137 days. there's another on sparkfun but I'd need an adapter cable to use it. any ideas? I'm in Texas, USA. budget: 8$/ea, I need 2.