Interesting, I can't picture myself using 'up through' here. Then again, I don't see it as wrong, just different, perhaps more accruate; I'm not quite sure.
Of course you want to use expressions which are commonly used by the particular community you're trying to reach.
The "through" issue may not be important in what you're trying to express.
You're trying to describe a period of time. Its beginning is not important but it's ending point can be critical - especially in matters of price changes.