Well, its crude but I have roasted a LOT of coffee with this. After a couple batches you'll figure it out easy enough.
https://plus.google.com/photos/+PeterMilne/albums/5726975245204033537?banner=pwa
$2000
https://plus.google.com/photos/+PeterMilne/albums/5726975245204033537?banner=pwa
$2000