Neon Mart via Amazon offers the Lighting Ever 5-watt (40-watt Equivalent) Dimmable E12 Candelabra LED Light Bulb 10-Pack in Warm White for $29.99. Coupon code "UZO5RNAO" cuts that to $19.99. With free shipping, that's the lowest price we could find by $16. Each bulb features a 120° beam angle, 350-lumen output, and up to a 50,000-hour lifespan.

Update: The price is now $19.99 with free Prime shipping without a coupon.