Listen.....I'm in no way putting down LED's. Some of the nicest grows I've seen here and elsewhere were under LED's.
For the most part, many have been SCROG's and SOG's, or grows that all the plants are at the same stage. The downfall of LED's for years was the lack of penetration...hence SCROG's and SOG's.....where it works well.
I run a perpetual.....plants at various heights and time in the room in 12/12. I don't manipulate or top my plants and let them grow out naturally. I may be the laziest grower here. I've perfected doing the very least while still getting decent yields. I typically have about 30 plants in various stages of veg/flower......and I probably spend a little over an hour a week tending to them.
My quoted $100 monthly electric cost isn't just for the HPS's. I have 3 6" inline fans, one wall fan, one floor fan, numerous clamp fans, and at full-tilt I have 22 T5's running. To balance this out.....my monthly nutrient cost is less than $10 a month, soil is $40......and that's it. All-in-all I do very little, spend a relative small amount to bring in about a lb a month. I can live with that.