I need a program made that can read your scripts and export as .WAV

Job ID: 36284531

Budget: $30 – $250 USD

Looking for a program that can read my scripts out loud, and had multiple different voices.
The program must be able to process 50,000 words at a time (maximum)

Voices must sound natural, and I should be able to export the readings as .WAV and MP3's

Strict budget on this, will need other programs down the line if you can make this one successfully.