Just some food for thought... as I found out this spring, volume planting of seeds does you little good if they don't germinate. So as one contemplates bumping up volume, be sure you have the time to make it a quality planting, otherwise you're just throwing money away.
As for the value... I wish I had as rosy a picture of the future, but... as the price rises, so does the supply. The more it's worth, the more people will try to raise it. Already, ginseng farms are springing up in New Zealand and elsewhere, as a result of the current prices.
Current ginseng price rise is also contingent upon the Asian econcomic boom continuing it's rapid growth. Anyone who remembers what the Japanese economy was doing in the 1980's also remembers what happened to it in the 1990's. Still hasn't completely recovered.
So while I'd like to think that the $1k/pound level for small amounts of wild root will be reached, there are a number of external variables that can influence this. Possible, but by no means guaranteed.
For this reason, I regard my ginseng crop more as a hobby than a definite source of income. Maybe I'll get a good return, but I'm not counting on it. Meanwhile, I'll continue putting time and around $1k/year into it. Hope to get around 25 acres of north facing hillsides planted some day.
But with only two people to do the planting, I can't see that I can assure a quality planting of more than 5 to 7 pounds of seed and a few hundred roots, that's about all the time I can spare in the fall. Got in a hurry last fall, and paid the price with poor germination.