I have a plant stand indoors, mostly for growing orchids, but this year I'm also growing a little basil.
My lights are old-school fluorescent shop lights, but I will probably be changing those out for LED lights in the future.
I have heard of agricultural set-ups (yes, for FOOD, not other "crops') in some countries that are all indoors, all LED, but I have no information on the economics. I'm thinking this was in northern Europe, in short summer areas.