Market Research Survey Providers

Hi! I am looking for a company that conducts market research surveys. Targeting an N of about###-###-#### from a pool of about###-###-#### Survey and qualification questions are written (should take no more than 10 minutes) and we know the profile of the respondents. My experience with this type of service is from management consulting where price was no issue so I would also appreciate thoughts on what I should be expect to pay for a survey of this scope. Turnaround time is about 3 weeks.