Consider yourself lucky - in Germany we're talking 20 EUR/month for a constant 45W load.
On the other hand, if you can, please consider using a more energy efficient alternative (and/or ensure you're getting the electricity from green sources) - the planet will warm up regardless of whether the electricity was cheap or expensive.
On the other hand, if you can, please consider using a more energy efficient alternative (and/or ensure you're getting the electricity from green sources) - the planet will warm up regardless of whether the electricity was cheap or expensive.