Using Prime Panels, we aren't able to specify the exact payment amount.
This is because different platforms have different ways of incentivizing participation. For example, SurveyMonkey gives to the participant's charity of choice. Other platforms give gift cards reward points. The vast majority of the time, market research platforms will leave compensation options up to the participants themselves (whether that be reward points, gift cards, or cash). We therefore have no way quantifying exactly how much participants would be compensated. The overall process of the market research platforms is similar to Mechanical Turk in that there are online participants who engage in studies for various rewards.
As a general rule, the only platforms where you know how much participants are being paid is Amazon Mechanical Turk and other micro-tasks platforms such as Crowdflower. There are many differences between micro-tasks and market research platforms in terms of culture, motivation for participation and participant expectations. The key commonality being that people participate of their own free will and feel that the rewards offered are worth their time.
The Prime Panels price quoted to you is the price that will ensure the providers send the desired sample. The providers will then handle the participant compensation on their platforms.
The language that Prime Panels users typically use in their consent forms (which has been approved by their IRB departments) is: "Upon completion of the study, you will receive compensation in the amount that you have agreed to with the platform through which you entered this survey."