[ADVICE] Can I sell an Audio E-Course on Fiverr?

I'm a Top Rated Seller, and I'm in the process of creating an e-course that will be in audio form (probably around 40 minutes of audio) with an accompanying workbook. It's related to the one gig I sell, and would appeal to the clients that I bring in.

Can I sell the e-course as a "gig" on Fiverr? I'd aim to have a tier that includes a one-on-one zoom call, and I'd like to have the course to be an add-on to my existing gig, but could I potentially set up a tier that just generates passive income? Like, once someone places the order, I send the course, and that's it?

Does anyone have experience with this? I feel like Fiverr is a place where people come for freelancers, not how-tos, but since I'm a TRS & have done over 1,000 gigs & have a 4.9 star rating, I'd love to leverage my platform reputation.

And for anyone who has done this - do you just say "will send within 12 hours", to account for sleeping?

Thanks!