Help me choose an driver and T6 cree.

I only want/need 1 driver.

$9,03(led)+$4,99(host)+$13,-(driver)= $27,- + thermal glue

I do think it's a fun expierence to build your own light. But if it does not come close to something you can buy I start to wonder if it is a good idea.

What would you guys do spend >$27,- on building this light or buy a $ 30,- Xeno E03 XM-L T6, 3-modes and also can take AA.

Xeno E03