DirtBiker:
As the subject line asks, where do you buy your Ardunios...
...and other stuff...
...and why?
DigiKey - price, availability, selection, delivery
Mouser - price, availability, selection, delivery (I live about 100 miles from their headquarters. Using even the cheapest shipping, I get orders the next day. :D)
AdaFruit - cool stuff
AVNetExpress - occasionally very very good prices, delivery
AllElectronics - weird stuff, price (e.g. Dome LED)
EvilMadScientist - cool stuff