You should first clarify your research objectives. From your statement it is just obvious to include human factor which means you are using human subject for which the required information would be:
The guidance as per the following publications may further help:
Fink, A. G. (2003) How to ask survey questions. 2nd edn. California: Sage Publications, Inc.
Fink, A. G. (2017) How to Conduct Survey: A Step-by-Step Guide. 6th edn. California: SAGE Publications, Inc.
Kelley, K., Clark, B., Brown, V. and Sitzia, J. (2003) Good practice in the conduct and reporting of survey research, International Journal for Quality in health care, 15, 3, pp. 261-266.
Suppose you have a valid questionnaire otherwise you have to build new one (or semi-structured) depending on your objectives. And because you are going to survey a human subject, it is very important to get an Ethic Committee approval before the data collection accompanied with signed consent form.
It also depends on whether you are going to create an instrument that should have judges' criteria and content validity, if you are going to adapt an instrument you must have the respective permission of the original authors.
Items of survey instrument should be developed based on research variables. Additional questions dealing with respondents' profile can be added to support the reserach analysis. Those should match with the variables. Price as research variable can be connected to respondents salary, etc
But still names of respondents shpuld be anonymous