Late 2009 Unibody MacBook for 220$ in 2016

Hey.

I am looking for internet surf and minimal slide-creater macbook and found a macbook unibody late 2009 for 220$ and wondering if it's worth it, especially it will be supported for macOS Sierra and i am thinking buying this macbook and re-install macOS and give it to my cousin. I know it does not mean supporting Sierra is like going to work super fast.

I want two things, "meh" battery life like 3 hours (which probably i will spend on it extra money) and don't want see beachball on youtube, mail writing or surfing purposes.

The macbook has

Core 2 Duo 2.6 GHz CPU
4 GB Ram
128 GB SSD

For those who are wondering.

Any help would be appreciated, if you think it's a bad idea, any other thoughts would be cool.

Thank you.

 

Keyboard lighting is not my thing but since my cousin will use the mac, it probably matters.

What about the price?

And, here is a video that i found on youtube about what does it look like in 2016

 

Well, i found a late 2009 macbook for $170 , what do you think about this price? It has 4 gigs of ram but probably i will need to change it's battery so add another $40 to the cost.

 

Thank you