Since price is the only thing you mentioned, guessing you'd want at least
some quality too. Check out the following two models from Sofirn's official website:
1- SP10 Pro AA EDC model ~ $12.55
2- SC02 EDC model (rechargeable) ~ $10.99
www.sofirnlight.com
(Heads-up though! Sofirn sells cheap junk right alongside their better quality lights. If you decide to explore their website, check that "Sofirn" appears to the left of a light's model designation. If it does, you're good. If not, that's the cheap junk that should be avoided. No clue why Sofirn does that nonsense on their site.)