What are the disadvantages of pre-paid calling card services?

[jacKson34]

I'm looking to switch from Verizon to a pre paid service plan, but before I do I just want to make sure the pluses out weigh the minuses.

[rafael9v9v]

There are many reasons why some people benefit from a pre-paid service plan, but there are still some disadvantages that we want for everyone to be aware of. The following is a list of five disadvantages to using a post-paid plan instead of a pre-paid calling plan.
Higher per minute rates
• Service and coverage area may not be the same as a post-paid plan
• Higher purchase price for the phone
• Must re-charge your phone when your minutes are exhausted
• Possible surcharges for inactivity, READ the fine print
Recently I located a service in internet at www.prepaidcardstore.com The facilities appear to be very lucrative and cheap.