Oracle, the face value of the notes was $11 million+. Dr. Shiong probably paid nowhere near that as the notes themselves are bascally worthless, as you pointed out. No, the deal was done this way in order to preclude any chance of lawsuits being brought. That is also why the company was given money to pay off junior creditors.
Bottom line is, we may never know what Dr. Shiong paid and the deal was structured to eliminate the chance of any successful lawsuits being brought.
Investors were warned over and over by the company. Although, why they didn't say anything on the day of the deal is beyond me. It only costs $100 to file one if I'm not mistaken. Maybe Witenschlaeger and van Leyen were vacationing that week.
Finally, to the people complaining that this is a scam and they lost money. Who told you this would be a good buy? Certainly not the company. Certainly not me. Look around, perhaps you'll see.