It's best to hold at least two sessions in order to arrive at any sound conclusions. Survey costs Survey prices will range depending a number of factors, including whether you purchase a mailing list, who designs the questions for the survey, what communication channel you use to send the survey, and how you want the results analyzed. For example, if you send 100 surveys and 10 people respond, your incidence rate is 10 percent. However, this per-interview price can increase or decrease according to the success of responses. The fewer the responses, the higher the price.
Costs are lower for two reasons.
First, postage isn't a concern. Also, email has a higher incidence rate, since the option to answer questions on participants' own time makes them much more likely to respond. Options for cutting survey costs To save some cash, design the questions for your survey in-house. And certainly consider email as opposed to snail mail. You don't have to pay for printing or postage, and the response rate seems to be better.