Lisa has one reasonable point -- ever since the Bell breakup, the cost of making a payphone call by dialing 0+number and then entering your LEC calling card number has been set by the operator of the payphone, and is utterly unpredictable and more often than not completely absurd. I agree that stinks, but my solution wouldn't be to regulate it but rather to get rid of it since it's now a quaint historical artifact from the monopoly era.
The vast majority of calling cards, whether from big companies like AT&T and Sprint or small companies that sell cards at newsstands, use an 800 number and the price you pay is set by the calling card company and is the same regardless of whose pay phone you use.
Seth: she's right to the extent that the price for 0+ calls is a ripoff.
Lisa: get with the program and use an 800 number to make your calling card calls like everyone else does.
R's,
John