What do you charge for SEO analysis?

I might not be the most knowledgeable when it comes to SEO but I've had a client today ask me to take a look at his site. I've had a quick look and there is tonnes wrong with it and it would take around 2 hours to write everything up that he should do about it. What should I charge - I know that's a little vague? He's pestering me for a price and I just don't know. I know some companies give it away for free but he's adamant to fix the errors himself.

200-799$ depending upon the client's background...

I've seen this pretty often too but aren't there site that generate all these reports automatically?

Automated Reports are OK but not really trusted and they will not solve the problems
I think it depends on the time that you have to spend in this site. and total correction of On page should not be done below 300$.
but you can increase the rate if you see that your client is a big company