Collate names, emails off listing website to compile a list of leads

Please read carefully before you make contact. I will only respond to those of you who show you have read the brief: - I would like someone to work from home to scan listing sites such as yell.com to compile email addresses names, phone numbers and professions (I will give a lot of guidance) to compile a list of "leads" for me. The information has to be accurate, and you need to work fast. I will tell you which sites to search on, what the post codes I am interested in, and give you plenty of guidance so that you are able to complete it with ease. I need the job completed fairly fast say within 48 hours of being awarded.
I am looking to compile at least 300 emails - please quote for how much you would charge me.
The minimum on the site is £50 but I am looking at paying less than that. To be discussed - I am flexible and interested to hear what you suggest! Look forward to working with you!
Nina