Around 9 months ago I started to sell a SaaS boilerplate on Gumroad and it's now been sold 105 times. Besides that, it has 15 sales on AppSumo and I recently launched a yearly subscription plan that now has 40 subscribers.
Besides the boilerplate itself, you now also get access to a private dashboard that has a ton of great resources for SaaS founders. With all the improvements and new additions to the package, it's almost time to launch a 2.0 version and see if it can get some more traction.
I wrote a more detailed post about how I went from $2k profit in a whole year to $2 profit in just a week. You are interested in my learnings you can read it here: https://www.indiehackers.com/post/how-i-went-from-2k-in-a-year-to-2k-in-a-week-f7eeaa115e
To celebrate, you can use this link to get 50% off on the lifetime license: https://jakeprins-nl.gumroad.com/l/serverless-saas/100-gumroad-sales