Audio books recording

Searching for native English speaker as narrator for two ebooks. The narrator needs have a clear and solid voice as well as correct English pronunciation. Need to have good articulation too. Each ebook is 200 pages of 100 - 400 words per page. The subject is on management. The recording is to be done in MP3 files and will be made available for sale on the internet. The MP3 needs to be properly formatted so that it can be emailed to me and listeners will find them easy to use