Usually $3.35 per each , now $1.5 shipped to AU .
Features:
1.LED tealight candle,it can flicker like a real candle. Available with different light colors such as red, green, blue, yellow, white and muti-color, which can change seven colors automatically.
2.Flameless, smokeless, safe to use with
3.Long lasting, battery(3xAG10,included)can operate for 48 hours continuously
4.With blowing out function, you can turn on the candle by blowing.
Specifications:
Type: LED Blowing Night Lamp
Light Color: 7 Color-changing
Power Source: 3xAG10
Body Color: White
Material: ABS
Working Life: 48 hrs
Flashing Mode: Steady Light
Product Size: ΓΈ45xH100mm
find more led items on www.myled.com
So the designer thought "48 hours should do"?