Yeah. I feel bad for the people of new orleans, but if I was there and my house had been blown/flooded away I'd be hitting every dry lootable pharmacy I could find. It's sick, but it's a way to get your life back after Katrina, no doubt.
The martial law deal would make me think twice, but if there were no cops/national guard you bet your ass I'd be all over those pharms. Fuck wal-mart and these discount stores people seem to find the urge to loot from.
As for the OP's question, no I don't think prices will go up across the continent. I know for a fact that the heroin prices in Atlanta are stable, and as for meth, being that we're the 5th largest manufacturing state in the nation I don't think that'll be a problem. I'd estimate the same for coke, but I don't know. I'm out of that loop. Shit, I'll stop. I'm drunk.