With UniTel Voice, SMS toll-free number texting is just $5 dollars a month. For five dollars a month, you can send and receive up to 500 text messages. If you go over your 500 text messages in any given month, an additional $5 will be charged per 500 text messages. If you wish to ONLY utilize the UniTel Voice toll free texting service (without using UniTel Voice as your toll free service provider for voice traffic), the UniTel Voice Toll Free Texting service as a stand-alone product is $9.99 per month for up to 500 text messages.  (Each additional 500 text messages is $5.00.)