Recently someone called and asked if they could come to my home and buy lettuce. Although I declined, I asked my wife to check the price of lettuce the next time she was marketing. For "Specialty Lettuce" the local market is charging $3.99 for 5 ounces. I weighed the lettuce I picked yesterday and it was well over 10 ounces, or a market value in excess of $8.00. That was just yesterday, and I have three more bags in the veggie compartment of the fridge, and lots more to pick. I estimate the lights add about fifteen dollars a month to the utility bill, so I am more than breaking even by growing my own greens. Additionally, to grow lettuce commercial growers spray it with six different pesticides, but I don't use any at all. Taking the above into consideration, hydroponic growing makes sense. I have a specialty lettuce in process for Christmas dinner and it is not going to cost us anything, as we have more than saved the cost of growing it.