Neon Mart via Amazon offers the LE Dimmable A19 Color-Changing 6-watt LED Light Bulb
for $9.99. Coupon code "2Y2VLLRD" drops it to $7.99
. Plus, Prime members bag free shipping
. That's the lowest price we could find by $8. It features 16 colors, is equivalent to a 40-watt incandescent bulb, and includes a remote.