I never managed to get it to stick, $10/mo for a search engine seems like a lot, when compared to the free DDG, and from what I remember the results weren't impressively better, just maybe a bit better.
I suspect Kagi aims to corner the premium market. The 300 searches will probably get discounted. But I don’t think they should nor will discount unlimited searches + AI.
They can give me the best rate with a cap or I'll wait for the competitor to show up. Duckduckgo is fine enough for now.