My biggest must splurge is not organic vegetables, chicken or eggs. It's... Containers!
You will thank me, your meal preparing will be 10x easier with matching lids and bottoms, and containers that do not leak!! The key to easy meal preparation is organization.
You can find some great box deals that set you off on the right food and give you a great base of quality containers, then you can add to them as you see which ones your use most.