The agencies generally charge a few dollars more per hour for their service.

"It's hard to see how companies can charge per item."

So you don't see lots of people using them because they charge per authentication.

Right now, they try to charge you per screen.

Smaller groups (25 or fewer) generally are charged per consumption.

A local tourist tax is charged per person, per day.

"It had a commercial purpose: so that people who looked down on those roofs could be charged more per square foot."

And as Apple doesn't charge per transfer, I think the price is about the same.

Owners who charge per person often admit children free.

Prices are charged per item, each with a maximum weight allowance.