Yep. Probably the only profitable indoor hydroponic operation in the world is growing marijuana.
For those of you so optimistic about buying hydro grown veggies, hydro grown marijuana retails for $200-$500+ per OUNCE. A $10 tomato might be a good buy in extreme, remote environments; not so much in the sunny, warm south.
Green leafies are the only ones that can be produced viably atm.
When the WOD is finally ended and everyone that wants a garden can grow one without Nazi Death Squads kicking in their door, the price will fall to realistic levels. Prohibition IS the only reason for the big bucks.