i think this is the cheapest for kogan branded smart bulb. $8.25 each!
but the E27 version cost a bit more
Control your lights remotely from anywhere in the world with these innovative and affordable smart bulbs.
Light up your room with the perfect level of brightness
Remotely control, schedule, and set scenes
Manage via the free Kogan SmarterHome™ app
Compatible with Alexa and Google Assistant
Brightness 1050 lumens (equivalent of 70W incandescent) with a 25,000 hour lifespan
it says can go up to 7000K
also this probably okay:
Kogan SmarterHome™ 10W Ambient RGBW Smart Bulb (E27) - 4 Pack for $45.99
all the bulb range:
from google found someone said IFTT does not work with kogan bulb, so beware.
past reviews from ozb said the kogan white bulb is bright or too bright at 100%.
can combine with this if targetted: