M$50-500 if I think it was worth looking at. M$10k for something if I use it once a week for the next two months. I don't need to never heard of it, but your recommendation needs to cause me to use the site when I wouldn't have otherwise. (ex: the AI search tools I currently use are exa.search and perplexity.ai and they're both good)

edit: Context, to give an idea of the way I use - I have several thousand lines of of handwritten shell and editor plugins/configs, as well as a dozen custom-built cli tools that I use weekly. I spend a lot of time reading papers/blogs/books on the internet, including semitechnical ones in areas I'm not specialized in, and wish there were better ways to find more of those. I read lobste.rs. But beyond that, I have a bunch of random interests you wouldn't expect that'd be too long to list here, and often get new ones.