<p>We found that sometimes buying a few of the sealed (not just zipped) bags of cut lettuce is worth the fact that they are slightly more expensive. (I like it when they’re on sale.) They don’t age as fast as loose heads. Not until you open them. </p>
<p>Also, for larger trips, it can be worth it to shell out the $5 or so to get back to your apt, with lots of bags, via taxi. Good luck.</p>