Hi Pete,


Please provide a recommendation for a low cost, out of the box WiFi (802.11n) experience using Yocto. 

Are you looking for a board that has WiFi on board? The Wandboard (http://www.wandboard.org/) or the Cubietruck (http://www.cubietruck.com/products/cubietruck-cubieboard3-cortex-a7-dual-core-2gb-ram-8gb-flash-with-wifi-bt-1) have that for example.

 
AFAIK, Raspberry Pi doesn't come with WiFi built in. 

Correct, but you could use a WiFi/BT USB dongle for a couple of bucks.
 
I would like to spend less than $100 but could stretch it. 

Wandboard and Cubietruck are both less than $100.


Cheers,
:rjs