Don't forget, if you hold ginseng over from one year to the next it will require certification by your state (illegal to posses uncertified after March).
Also, most importantly, it loses value from one year to the next because of 1) the effects of oxidation (becoming stale) and 2) the additional work and cost to dealers to get it exported
On point 1 If so why is it perfectly acceptable for the Chinese to hold root for years
before selling especially the rarer roots??
In regards to point 2 in my looking into the export side of things and from what I learned from Michael Moore the head of the CITES permitting process once you apply for then can get a multiple export license you then request for your individual export permits for each harvest year being exported showing states purchased from with each single use export permit covering 1 year but each year being allowed to cover root from multiple states with multiple certificates of origin.
So you only have to apply for 2 permits if you were to handle 2013 & 2014 root both and the cost of the single use permits which were valid for I believe 6 months were like $5.00each
You do require 2 export license though if you wish to handle both wild & propagated though. With wild being a 1 year license for $50.00 renewal able yearly and the propagated being $200.00 initially valid for 3 years then renew able every 3years for $100.00
So the costs aren't really that high from what I can tell.