TomTop offers this E27 Flame Flickering Effect Light Bulb for $9.99. Coupon code "FLAME6" cuts that to $8.49. With free shipping, that's the lowest price we could find for such a bulb by $13. It features a 300-lumen output.

Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily. Also, this item ships from China and requires two to five weeks for delivery.