I launched dashai.xyz a few days ago.
I've promoted it on twitter and posted it on a few subreddits, hacker news etc
And so far I've had 4 users pay for the product.
I had a customer ask for a refund as well because of a bug that I later fixed.
I've never made sales for a new product this fast so it definitely feels exciting.
I'm going to follow the same strategy of just promoting it in different websites/communities, sharing on twitter and improving the product over time.
I only spent about two weeks building the initial version and have a modest goal of making a 100 sales.