I'd rather consider one that relies on regular batteries rather than button cells. Longer battery life and you can buy batteries at dollar stores. There's a boatload of international sellers with all kinds on ebay that would fill that requirement. This one for under $5 has what looks like fourteen 5050 RGB LEDs which are plenty bright plus it has 30 patterns built into the light. Cheap enough to give it a try if you are adventuresome 14 LED 30 Patterns Cycling Bicycle Wheel Spoke Light Colorful Lamp Durable R1V5. Or - 32 LED version for $8 Bicycle Bike Motorcycle Cycling Wheel Spoke Light 32 LED 32 Patterns 4 Colors | eBay That's a lot more LEDs than the CatEye Spoke Light With Reflector Kit Orbit 2 which sells for around $20 but has only one LED in each spoke light. CatEye Spoke Light With Reflector Kit Orbit 2 SL-LD150 White: Sold as Pair
When I want to try different things this is what I do, look for an international seller where the cost is low. I'm often surprised at how good these things are, particularly the LED headlights, COB taillights, and flashlights.