Since there is going to be no flying on Argus the herb and
Sarguerita Primeva price is for sure going to be VERY overpriced the first 1-3 days of the release. So if possible try to sell some out very early. I am sure that there will be a great early demand on all the gathering items, so it is hard to tell exactly which one(s) will pull ahead early. They are used to craft the new 935 trinket, which will be highly demanded early release, and requires quite a lot of herbs, therefore you might also want to take advantage of the early supply/demand. Good luck :)