http://www.amazon.com/gp/product/B07...?ie=UTF8&psc=1

Get two pair and you're still under 40 USD. Rear is also rechargeable. My handlebar is not thick enough for the included mounting gear but adding a cut-up inner tube as a shim makes them snug.

Amazon name:
TOPTREK USB Rechargeable Bike Lights Set,Super Bright CREE LED Bicycle Front Light and Tail Light Set,Quick Release Compatible with Mountain,Road,MTB,Kids & City Bike, $17.99, delivered.

It had lots of 5-star reviews but Amazon removed them all. They did sound too good to be real reviews. But the kit is good value. I did not like the idea of just one front/rear, so got two.