A feasibility study should be set out like this (according to Heinemann's IPT textbook:
1. Title Page
2. Contents
3. Problem Definition
4. Requirement Report
5. Summary of investigation (on existing system)
6. Alternative solutions (other than the one proposed in the study)
7. Reccommendations (which of the solutions you have reason to believe will be most beneficial to the participants)
8. Project plan
9. Appendix (Gantt charts, flowcharts, surveys etc)
I would suggest it irresponsible of anybody to allow possible plagiarism, although, so I don't think anybody will show you their feasibility study, unfortunately. This structure should help you out anyway. Good luck