From playonline : "(3) Resources: Numerical representation of an area’s resources. This rating is influenced by such factors as the number of temporary items available."
First thing I tested is if I could buy things from another nation, answer was a no, I didn't get the dialogue to buy it when trying from Sandy or Windy NPC.
Second thing is how exactly the number for Resources affects campaign.
http://img507.imageshack.us/img507/5095/graubergwx1.jpg
http://img502.imageshack.us/img502/3751/passhowab0.jpg
It seems like if your country has resources, you will be offered temporary items. If your country's resources in the region are 0, you won't be offered a thing.
So far all the "30 points" packages use up 1 resource per item. As you can see in the Passhow screenshot , it drops down two points, this is after I buy 2 temp items (Lethe Water and High Potion +3).
http://img261.imageshack.us/img261/4...t3itemszb6.jpg
In rolanberry, I bought 3 items, RR/Lethe/Hi Pot. Dropped by 3.
I'm not 100% sure how they fill. I think it's a combination of filling up the QM's items, and then escorting a unit from the Garrison to the outpost - but I'm not certain on this and don't have any op credits to test it out.
XI Wiki

