[archargelod]

I've been lately using FOSS metager.org as my main search engine and it has decent results. Often a lot better than google, especially with quoted words and 'site:' specifiers which it never ignores. It also has domain blacklist similar to kagi.

[smusamashah]

This looks nice and the payment model is more convenient (on demand). Haven't heard of this before. From the first use, it looks like a search aggregator as it takes results from many engines. Each source engine costs differently.