Taimaka save a life for 1600$?

Do you think this charity is legitimate? It seems like they are but I’d like your opinion before I donate a few thousand more dollars to them. https://​​taimaka.org/​​

They say they can save a human life for about 1600$ using the same formula as givewell. What do you think? Other effective altruist charities can’t save a life for less than 3500$ and usually more like 5000 $

I’ve read some research on them https://​​www.happierlivesinstitute.org/​​taimaka-summary/​​ but it was more focused on how they improve lives I’m curious about whether or not they will save a life of someone who would have otherwise died for 1600 ish dollars.