I really like what he did because instead of offering a service, he offered knowledge.
Basically he created a video and now he sells it over and over again. That means that (other than delivering the video) there is no new work involved after creating that video one time.
For ideas on how you can do the same, go to Fiverr and search for the words 'give ebook'
and 'give video'. You will have to sift through the results to get some good suggestions, but if you need some extra money on the side - it will be worth it.
A few quick seller tips:
- Make your title inviting
- Adding a vide to the gig description helps it sell better
- Pause your gig when you are too busy to take care of orders