1. These are not HFT models. They trade once every 2-4 weeks on average. They scale to billions in capital, so selling them does not inhibit my own returns. 2. There's a lot of demand. Part of the reason I decided to launch is I had some friends IRL begging me to let them use my models as well. Seeking Alpha has over 15M MAU and hundreds of thousands of premium subscribers, and in my opinion this service provides more direct value and wastes less of your time with noise. 3. All the money I make from this goes back into my own bot and compounds. Sure the $1400/month doesn't add up to much right now, but 1000+ premium subscribers one day would make a huge difference to me financially. 4. I believe we are at a precipice with passive investing, and the next bear market which could be right around the corner will dishearten a lot of folks. The more money investing smartly in the market at a reasonable fee makes the markets and overall economy less fragile. More automated smart investing saves society the drag of lots of suits on wall street mostly playing a big marketing game without producing much alpha or liquidity or any other measurable benefit in contrast.
Also, on a lighter note, running a business is just a lot of fun. I love seeing people use my product and get value from it.