I agree with both the above. 350ish is about right and 250 at the lower end, if you can get the quality for that price. I provide this service, thats not an advertisement, and the only time I would charge a figure similar to 600 is when there is more to it, or when the client specifically asks for more details, such as a longer report and advice on the elements of the report that I would have to be more precise and accountable on. Double check with the guy that he is aware that it is just a house survey for sale purposes and not for other reasons such as structural, or measured.