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Cut $200 from a family-of-five Trader Joe's shop with ChatGPT

WorkedEvidence: Described by posterPosted Last checked

ChatGPT built a family-of-five meal plan and PDF list; Courtney McGee's Trader Joe's bill came in $200 cheaper.

How to use this

  1. Tap Copy prompt.
  2. Open ChatGPT.
  3. Paste it into the message box.
  4. Replace anything in [CAPITAL LETTERS IN BRACKETS] with your own details.
  5. Send it, then read the answer before acting on it.
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A prompt is the message you send to the AI tool. Copy the one on this page, put your own details where it asks, and read the answer before you act on it.

Prompt

Recreated prompt

The source didn't share its exact prompt, so we wrote one from what it describes. The result shown is the source's, not ours.

What the prompt labels mean

The person didn't share their exact words, so we wrote this from what they described. We haven't tested it, and they didn't use this exact version.

Plan a week of dinners for my family of five. Keep meals reasonable and quick (30 minutes or less), aim for solid protein and fiber at each meal, reuse ingredients, and match these usual meals and kids' favorites: [LIST]. Give me a printable grocery list organized for Trader Joe's.

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ChatGPT Used in sourceGemini Grok Claude

This prompt has blanks to fill in, like [LIST]. We'll copy it instead of filling it in, so you can edit it before you send.

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Optional stronger version

Our rewrite with extra checks. The poster didn't test it.

Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish.

Goal: Plan a week of family dinners and a store-ready grocery list that lowers the bill without picky-eater chaos.

Questions to ask me first:
- How many adults and kids, and any hard no foods?
- Which store are you shopping, and what is this week's budget?
- How many nights need 30-minute meals?

Inputs (fill in or confirm):
- Family size: [ADULTS / KIDS]
- Favorites and bans: [LIST]
- Protein/fiber targets: [TARGETS]
- Store and budget: [STORE / BUDGET]

Rules:
- Reuse ingredients across the week.
- Keep weeknight cooks under 30 minutes unless I say otherwise.
- Include a printable grocery list by store section.
- Don't invent prices; estimate only if I ask.

Checkpoint: Show the 7 dinners first and wait for my OK before the full list.

If you get stuck: If a kid favorite conflicts with the nutrition target, offer two swaps and ask which to keep.

Verify before you finish: Check that every dinner ingredient appears on the list and that bans are absent.

Output: A 7-day dinner table and a sectioned grocery list as a printable PDF-style layout.

Done when: I can shop once and cook dinners the kids will at least try.

AI tool

ChatGPT

Outcome

Courtney McGee, food planner for a family of five, gave ChatGPT elaborate guidelines on reasonable meals, protein and fiber targets, usual eats and kids' favorites. After some back-and-forth tweaking, ChatGPT sent a PDF grocery list. McGee bought everything on that list at Trader Joe's and the bill was $200 cheaper. The kids ate at least some of every dinner, meals took 30 minutes or less, and food planning took up at least 60 percent less brain space that week.

Evidence: Described by posterThe person describes what happened in words, without screenshots or video.

Source

Posted
by Courtney McGee
Last checked
Method:
How we verify

https://likeitshard.substack.com/p/things-i-loved-this-week

Context: Self-reported savings for one week. No exact prompt is quoted; recreated from the guidelines described.

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