I guess my habit is serious. I just got my second Model B, Rev 2 Raspberry Pi (so I can have a "stable" one and one to mess with).
I received the order from www.mpja.com (mentioned in the previous post). Delivery was quick and everything worked (but the default delivery by UPS Ground is pricey -- I switched to U.S. Mail).
I particularly like the tiny PIR detector -- about 1/2" across, $3.95.