These rates may vary depending on where you call. If you can't find the rate, call the card's customer service number. The pre-paid phone card industry is highly competitive. Beware of very low rates, particularly for international calls. They may indicate poor customer service.
Some cards add a surcharge to the first minute of use.
Others charge an activation fee for recharging cards. Check on expiration dates. Most cards expire one year after first use. Look for a toll-free customer service number. If the customer service number isn't toll-free or displayed, it may be difficult to contact the company if you have a problem with the card.