Find and test promo codes before checkout
ChatGPT searches for public discounts, tests promo codes and confirms the final checkout price before the user buys.
Done withChatGPT
- What they did
- The post describes a two-step ChatGPT Work workflow: first give the agent the exact product link, chosen variant, quantity, and shipping destination so it searches for public codes, sales, retailer offers, rebates, cashback, competing sellers, and price-match options. Then, in the same chat, ask it to use its browser on supported sites to open the cart, try each candidate code one by one, record the before-and-after totals, reset the cart between tests, and pause for the user on logins, CAPTCHA, or other sensitive steps.
- How it went
- The claimed result is a ranked comparison of which codes actually worked, why others failed, and the lowest displayed final total before purchase. The post gives no measured savings from a real run, and notes sites may block automation or require user takeover.
- Worth knowing
- The main catch is setup: use ChatGPT Work, start from the exact product page with the item already configured in the cart, and explicitly tell it to stop before placing the order.
Try it yourself with ChatGPT
I'm about to buy [product] from [store or website] and want the lowest price. Search for current public promo codes and discounts, tell me which ones are likely to work, and list the sources. Give me a ranked list of codes to try and the expected final price, and don't purchase anything.
Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.
Source: Reddit · Aug 24, 2026
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