Yes, we bought at discount and IIRC I assumed 80% did, it was a very popular course (I'd be surprised, given the figures were correct and the course wasn't free

Yes, we bought at discount and IIRC I assumed 80% did, it was a very popular course (I'd be surprised, given the figures were correct and the course wasn't free at any point, if I'd been more than one order of magnitude out -- which makes it still massively more financially rewarding than direct teaching: which was my point).