Here are some of the things to check before deciding on which toll free carrier to avail.

1. You need to know if most of your toll free calls will be coming within your state or out of you state. Check the rates for instate calls or interstate calls since it  vary in different areas. Make sure that you have found the cheapest rate that is available.
   
   
2. Check if most of your toll free calls are from a payphone. There is a charge for using a payphone when they make a toll free call to compensate the payphone owners. The amount varies. inquire about it form the long distance company that you are interested in getting your toll free service.
   
   
3. Do not go with a name brand carrier, they are usually more expensive than small reseller.
   
   
4. Check if they have any agreement that would lock you on athe same rate for a year or more. The rates might go lower but you will not be able to avail it since you have an agreement with your long distance company on paying the same rate for a year.
   
   
5. Check for monthly fees. Look for a cheap long distance carrier   that has no monthly fee.
   
   
6. What kind of payments options they have available. Check if there is an option on paying by credit card or check. And also check if the company offers an on line billing, this showws your bill when you go online.
   
   

Click here  and view PNG's cheap Toll Free Service.