I have a python code to send bulk messages on WhatsApp (to non-saved numbers)

A few years ago I wrote python code that still works, and I'm using it in the company I currently work for from time to time.

It works just like email newsletters, you just need the mobile numbers and the message. If you want, you can even personalize the message. You don't need to save the numbers upfront on your mobile device (that's the main advantage).

Whoever buys this code from me will have to do some preparations before each new bulk that take maybe 5 minutes - and for that I'll make detailed instructions with videos.

Then the code just runs on WhatsApp Web, (the user will need a valid phone number with WhatsApp installed).

It sends roughly 10 messages per minute. You can make it send more (maybe 30-40), but I didn't want to take any chances of WhatsApp blocking the number so I moderated it a bit.

I was thinking of selling it for 100$.

I thought of buying a simple .com domain and a landing page with videos and selling points, and a CTA button to a Gumroad page for the purchase (The code itself with documents and videos for instructions).

Then I'll give email support and even live video chat support.

I thought of marketing it in some Reddit growth groups and even here on IH.

What do you think of the "product" and the demand for it?
What do you think of the pricing?
What do you think of the acquisition methods?
What do you think of the funnel?

Thoughts and suggestions are more than welcome!