Information Searching

I have a database of 500 company names and addresses and I need someone to search the internet for e-mail addresses for them. I suspect it may be possible to find between 50-100.

I am more concerned with speed and quantity than finding addresses for all the companies provided (although the information must be correct). I can provide more company addresses but I am looking for 100 e-mail addresses from the companies provided.

Please can you give me a bid for the 100 addresses or a price per e-mail address. As I haven't done this before I'm not sure of the return rate or time it would take so if you have any ideas let me know otherwise we may need to test it the first time and reconsider for future searches.

I have attached an example of the file.