You know, it's phrases like this from the Chestnut page that make me wonder why more people aren't growing them. They are pretty easy to grow, the only drawback is they don't produce for 5 years. But still.
"Can produce 2,000-4,000 lbs at maturity (10-15 years) which currently retail at $3-$4 a pound."
"The USA imports $20 million in chestnuts a year because there are only 500 acres producing at the moment."
"American-grown nuts reach the market sooner, freasher and command a higher price than imports."
"... virtually unlimited market for years to come."