I did it and it was a great day out. I was riding with someone new to sportsbikes (but 20yrs on dirt) and he was so slow on the first session that they bumped him to another rider of similar speed/experience... so I had the instructor to myself for the day I'm a million miles from being fast, but this lad was scared to go beyond 10deg lean, so it was pretty good that they paired him with someone else. I have a mate that did it and wrote one of their bikes off. Smashed up his collarbone too, but other than missing out on the rest of the day there was no financial extras other than the sign-up fee.