Bargain hunting for tissue in bulk

The cold season is here. I've gotten my flu shot, but I still have the sniffles. I've never done this before, but I ordered boxes of tissues through the office supply catalog, because I can get six (6) boxes containing 100 tissues per box for $5.49. That's 92 cents per box; less than 1 cent per tissue. Okay, I won't get carried away. Free S&H, I guess because it's the holidays. Not bad, considering that tissue in the grocery store can cost me around a buck per box, averaging 70 tissues per box, a penny per tissue. Sorry, got carried away again. Yet, every time I look around, I'm running out for more. This should last us awhile.