Grocery purchases that may cost more but are frugal for you?

I've seen a few of these posts re: general purchases, but I'm wondering what grocery items you'll splurge on for either convenience or flavor that make it worth it for you vs the cheaper option?

Mine is individual guacamole packets. Yes, the packaging isn't ideal, and it's definitely more expensive than buying an avocado or two, but I almost always end up throwing out avocados before I get around to using them, and if I do get around to using them I feel like I have to eat way too much fat in a short time. These packets last for like a month before they start to brown and I love having them on hand as a topping or even a quick, filling snack with veggies or chips/crackers.