This just out of Growing Produce magazine:

http://www.growingproduce.com/vegetables/organic-fruit-sales-surge-12/

"While berries as a whole have been on a strong upward trend for some time, organic growth continues to be at a faster pace than its conventional counterparts." 

Year over year sales in organic berries have surged 22% in dollar value and 16% in volume.  

The last paragraph of the article is probably the most informative, as it quotes retailers stating that the biggest hurdle to growing sales in organic is cost, indeed finding the "sweet spot" between convenience and fair pricing (is the implication that pricing is currently NOT fair!?) will be the key to future growth in this space.