having recently sourced near identical components, the combo wifi&#x2F;bt chip was around $1.40 in large volume. I&#x27;d wage in 40nm its &lt; 50c for BRCM to produce depending on the break they got. ant is &lt; 30c.<p>gotta assume this is connected via USB so it won&#x27;t be the lowest power - taking up the 2836&#x27;s sdcard slot would be 6 IO out of the GPIO map which would be over kill. so most likely this solution needs the onboard USB hub &#x2F; ethernet chip and its less likely they will bring connectivity to the cheaper versions.<p>pretty happy with this - saves 2 USB peripherals!