Click on the link below. It will take you to a listing on eBay. Bunches there for around $20.00 But be fore warned, these lights do not work well enough for a motorized bicycle at all. They do not produce near enough light to give you reaction time for a quick stop. Good bike lights cost upwards of $100.00 retail. I bought a brand new $150.00 Cygolite brand off eBay for $50.00. Do your homework and shop around. There are deals to be had. Hope this helps.