OK, I guess I wasn't clear. I'm talking about the mining activity itself, and looking at ISK/hour. If an ore is worth 10 times more than another, but the >ore< takes up 10 times the room, then my ISK per hour won't be any different. If I want to increase my ISK/hour at mining, I can see how to do that by getting bigger/better ships with more/better lasers, but I don't see how I improve my ISK/hour (at least, not by much) by going after rarer ores (other than the top 3 ores, maybe). I thought maybe I was missing something, but I think it's just a case of, it's just those last few super rare ores that are worth more per hour.