That's quite a bit of lettuce, although when I was living on my own and making most of my meals I would tend to get one or two bags of prepared salad per grocery shopping, which I tried to make a weekly thing. I would tend to eat not quite enough to need two a week, but not quite so little for one a week to be right. And then I would get into a mood where I didn't want any at all and the bags would turn to putrescence instead. So I guess it really isn't all that much lettuce after all.