Are you choosing between 2 or 3 items, mobile promos, or online deals and want to know which gives the best value?

Gather the prices, shipping costs, voucher discounts, and specs of the 2 or 3 options you are considering. Paste the prompt below into ChatGPT, Claude, or Gemini. Review the comparison table and calculated total cost before checking out. Before you use it: Factor in shipping fees and voucher discounts to compare true total out-of-pocket spend.

Compare purchases, promos and items before you buy

Listen to this guide

AI narration · English · Prompt text stays on the page

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Two unlabeled boxes side by side with a tape measure, shown in Pinoy AI Works artwork

What to do

Gather the prices, shipping costs, voucher discounts, and specs of the 2 or 3 options you are considering.
Paste the prompt below into ChatGPT, Claude, or Gemini.
Review the comparison table and calculated total cost before checking out.

Try this prompt

Include shipping fees and voucher discounts so the AI computes your true final spend.

Compare these purchase options/promos using only the terms I provide. Do not choose for me or invent missing deal conditions.

WHAT I NEED
Use case: [WHAT I AM BUYING FOR]
Budget: [AMOUNT / NONE]
Must-haves: [LIST]
My priorities: [TOTAL COST / QUALITY SPECS / WARRANTY / DELIVERY / OTHER]

OPTION A
Price: [FACT]
Discount/voucher: [EXACT TERMS / TO CONFIRM]
Shipping/fees: [FACT / TO CONFIRM]
Quantity/size/spec: [FACTS]
Warranty/returns: [FACTS / TO CONFIRM]
Promo conditions: [FACTS / TO CONFIRM]

OPTION B
[SAME FIELDS]

RULES
- Do not invent original price, discount eligibility, voucher stacking, minimum spend, shipping fee, warranty, stock, seller quality or expiry.
- If only one option states a term, mark the other “To confirm.”
- Separate advertised price from effective total cost.
- Calculate unit price only when quantity/size units are compatible; show conversions.
- Do not treat percentage-off as savings until the eligible price/base is known.
- Do not pick a winner unless I explicitly ask later.

OUTPUT
1. Same-row comparison.
2. Effective cost calculation using confirmed terms only.
3. Unit-price comparison when valid.
4. Promo conditions that could change the result.
5. Missing facts to verify before checkout.
6. Trade-offs based on my priorities, labelled as interpretation.

Finish with a calculation/source check and remove any savings claim unsupported by the supplied promo terms.

See a sample result

Illustrative example. Your answer may differ.

Comparing Smart PowerAll 99 vs GOMO 30GB No Expiry vs DITO Data 99. Result: Table calculating Peso per GB, validity, network signal considerations, and clear recommendation based on usage habits.

Before you use it: Factor in shipping fees and voucher discounts to compare true total out-of-pocket spend.

Philippine notes

Works for appliances (inverter vs non-inverter), laptops, smartphones, Shopee items, and mobile telco promos.

Start with the basics Source & background

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