Looking for a board? Selling on Tindie
Initial parts list:
$? - GorillaPi Heatsinks
$? - SanDisk 64GB MicroSD card
$? - 5V 2A micro-USB power supply
$? - 3D printed dials
~$90 - BOM https://www.findchips.com/u/list/71934-open-nsynth-super (review with original Excel file)
(this includes the rpi3, should probably be broken out for those who already own one)
~$40 - PCB https://oshpark.com/shared_projects/Cho0MtsN
You can also get the semi-assembled PCB here now :) https://www.tindie.com/products/11733/