Incentives

In any case you'll have to pay the speakers an incentive; money is still the most effective incentive but not easy to distributed by mail (in case of remote speakers like in a telephone recording). Think of valuable things that are easy to be mailed, for instance telephone cards, cash cards for Internet purchases etc.

The value of your incentives can roughly be estimated from the time the speaker has to spend for the recording: 2 minutes equals 1 EUR is a good rule of thumb (not counting the time to get to the recording location; just the pure time spent there).

Incentives for telephone recordings are usually at a lower rate because the speaker can participate from wherever he wants to: 3 minutes equals
1 EUR.

As a minimum incentive we consider the sum of 5 EUR^6.7.