Yes, the receiving party is charged 3.9 cents per minute. However, a call to a Toll-free number is free for a calling party.
The setup fee is paid when Toll-free number is purchased. $5 activation fee is one time charge.
No, unless this charge is included in your side.
You will not be able to receive calls, therefore, please make sure your prepaid balance is positive or set up an auto-recharge.