For greens, an conventional farm is $0.65/lb and a greenhouse is $2.33/lb.

> Assuming a 40-45% gross margin for a typical supermarket produce department, retail prices for greens would need to be approximately $1 a pound for conventional, $4 a pound for greenhouse, $5 a pound for vertical, and $12 a pound for container-grown. A typical head of bibb or butter lettuce weighs less than half a pound. Therefore, the lettuce can be grown in a greenhouse or vertical farm and sold at retail for $2 to $3 per head.

> Although greenhouse or vertical farming is three to five times more expensive than growing on a conventional outdoor farm, it still allows for competitive pricing to the consumer with other vegetables and sides.

The yield can go up, but the cost per unit goes up too.