Market research (Vendor)

We are looking for someone to conduct some market research for us within the property industry.

We are seeking to understand where homeowners go to sell their property
We are seeking to know the things homeowners like about using an estate agency to sell their property
We are seeking to know the things homeowners do not like about using an estate agency to sell their property
We are seeking to understand what homeowners think is a fair cost to sell their property
We are seeking to understand what homeowners think are good about purplebricks (or a similar company)
We are seeking to understand what homeowners think is not good about purplebricks (or a similar company)

Please include in your proposal the intended sample size and how long this project will take.