Nicely explained!
This is great! From his UI example it seemed like the rewards cards were burned and the DEC earned. Cuz if so that's awesome and fair. But i guess if that's his way of extracting some value by getting the difference between DEC value and market value then that's understandable and should be mentioned. (EDIT: You mentioned it... however the value difference is rather large sometimes 60%+ at times)

But again this is really an awesome thing and well explained.