Thread by @heynavtoor

THAT’S WHY AMAZON HATES CLAUDE.

The cart was around $300.
I checked out at $147.

No coupons. No browser extensions. No “deal” newsletters.

Claude now filters my online shopping—what to buy, what to skip, and where it’s cheaper.

Here are 10 prompts that save you money every time you shop online (Save this).

Online stores are built to make you spend more:

“Only 3 left.”
“Limited‑time offer.”
“People also bought…”

Claude flips that script.

Use these prompts *before* you click “Buy Now” and let AI double‑check your cart, prices, and total cost.

1) Clean up the cart

Prompt:
“Act as a personal shopping advisor.

Here’s my cart: [paste product names or links].

For each item, tell me:
• Do I really need this now? (yes/no + short reason)
• Is there a cheaper but good alternative?
• Can I buy a smaller or larger pack to save money?

Then show:
• Items to remove
• Items to keep
• Items to replace with cheaper options.”

2) Compare prices across sites

Prompt:
“Act as a price comparison assistant.

I want to buy: [product name + key specs].

Check popular sites (Amazon, Walmart, etc.) and tell me:
• Top 3–5 offers
• Total price including shipping and basic fees
• Delivery time
• Return policy

Highlight which option is the best mix of price + reliability.”

3) Spot fake discounts

Prompt:
“Act as a discount detective.

For this product: [link or name], analyze:
• The claimed discount (e.g., ‘60% off’)
• Whether this price is actually special compared to normal pricing
• If the ‘before’ price looks inflated
• Any cheaper alternatives with similar features

Tell me clearly if this is a real deal or just marketing.”

4) Check total cost, not just item price

Prompt:
“Act as a total cost calculator.

I’m choosing between these options: [list or links].

For each option, calculate:
• Item price
• Shipping
• Likely return cost (if any)
• Any subscription or refill traps

Then:
• Show the real total cost for each
• Tell me which option is actually the cheapest in the long run.”

5) Quality vs cheap junk filter

Prompt:
“Act as a product researcher.

I’m thinking of buying: [product name + link].

Look at:
• Specs
• Brand reputation
• Typical failure complaints
• Warranty and support

Tell me:
• Is this good value or cheap junk?
• What are 2–3 better options at similar or slightly higher price?
• Which one you would pick and why.”

6) “Wait or buy now?” decision

Prompt:
“Act as a money coach.

Here’s what I want to buy: [product + price].
My situation: [why I want it / how often I’ll use it].

Help me decide:
• Do I buy it now, wait for a better price, or skip it?
• What’s the cost per use if I buy it?
• Is there a cheaper way to solve the same problem?

End with a clear recommendation and reason.”

7) Build a monthly ‘buy list’ instead of impulse

Prompt:
“Act as a budgeting assistant.

Here are things I *want* to buy this month: [list].

Group them into:
• Must‑have now
• Nice‑to‑have later
• Impulse / skip

Keep my total budget under [budget amount].

Return:
• Final buy list for this month
• What to move to next month
• What I should delete entirely.”

8) Check if a subscription is worth it

Prompt:
“Act as a subscription analyst.

I’m considering this subscription: [product + price].

Tell me:
• How often I’d have to use it for it to be good value
• Whether buying one‑time versions would be cheaper
• Any hidden price increases or renewal tricks
• If I should subscribe, buy once, or avoid.”

9) Find cheaper alternatives with same use

Prompt:
“Act as a value hunter.

I want to buy: [product + main purpose].

Find 3–5 cheaper alternatives that:
• Do the same job
• Have decent reviews or reputation
• Don’t clearly sacrifice important quality

For each, give:
• Price
• Main differences
• Why it might be better value for me.”

10) Build my smart shopping rules

Prompt:
“Act as a personal finance coach.

Based on how I shop and my money goals: [describe briefly],

Create simple rules I should follow before online purchases.

Include:
• Checks I should run (cart cleanup, price compare, review quality, etc.)
• A short checklist to run inside Claude every time
• Hard rules for when I never buy (late at night, after social media, etc.)

Make it easy enough that I’ll actually use it.”

You don’t need another “deal site”.

You need a brain between you and the Buy Now button.

Let Claude:
• clean your cart
• compare prices
• catch fake discounts
• protect you from impulse buys

Use these 10 prompts next time you shop online—
the difference between “around $300” and $147 adds up over a year.

I hope you've found this thread helpful.

Follow me @heynavtoor for more.

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