Riva:
Looks remarkably like the real thing, and the same price.
Teensy 3.1 - Made in the USA, Purple OSH Park Edition
That's because they are the real thing sold through a deal with PJRC from what I read on their forum.
Edit: These really are genuine Teensy 3.1 boards from PJRC. I know Laen, and I personally delivered these boards to him last Friday. Normally you should be suspicious of such a low price, but in this case, I can assure you, it really is real. Well, at least for now. We'll see how long it lasts.
Last edited by PaulStoffregen; 12-13-2013 at 05:24 PM.