4Pcs 3.7V 18650 3000mah Rechargeable Batterys - $6.13 + Free Shipping (Free S/H over $25)

Probably the worst 18650's on the market. Do some google research and you'll see.

btw I registered just to post this warning and it took about 10 tries to get through the captcha image verification. I'm pretty sure some of those characters were Sandskrit not English. lol

Ships from China. These are counterfeit Ultrafire cells. Almost certainly overrated capacity. Potentially unsafe.