Lunch break here, eating a sandwich with 'living lettuce' and Aldi turkey lunchmeat. This is a funny combination since one is hip and pricey and the other is poor-man meat. I thought to recommend living lettuce to those who often discover their bagged lettuce had pre-maturely retired. If you can swing about $3 for a head of lettuce, it'll last you up to 18 days. My Auntie Cheryle recommended it to me years ago, and it's a perfect mate to a workday sandwich.
Need more convincing, here's a reader's digest article with details.