What provider are you with to be that cheap as i wish mine was...even my COB's at 200w cost me more than that
![Stick Out Tongue :p :p](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f61b.png)
on 20/4 schedule its more like 80/90p as i believe its a 300w draw or something for the mars600...
0.3kW x 20 hours x 14.4p = 86.4p still silly cheap in comparison to HID lights though!