I'm having a casual meeting with a client today. I am developing their small business website and will want to get them to sign up for google places listing. I think a fair price for a guaranteed first page listing is £150 per month with a 3 month minimum term. If after 3 months they are not on the first page I'll work for free. And if after 6 months I'll give them 100% refund. Is this too low, high? What do you think is a fair price?