Price drop tracker that messages you when it’s time to buy
Price trackers often work on a single store and miss the deal on another site. With this prompt your todo.is agent checks the product pages you choose on a schedule, compares the price to your target and only messages you when it’s worth buying.
The prompt
- Track the price of [PRODUCT NAME] for me. Check these pages: [PRODUCT LINKS]. Every day at [CHECK TIME], open each page, read the current price, shipping cost and whether it’s in stock. If the total price drops below [TARGET PRICE], message me right away on [WHERE TO SEND IT] with the store, the price, the link, and how it compares to the lowest price you’ve seen so far. Don’t message me if nothing changed. Every [SUMMARY DAY], send me a short summary of the prices across all stores. Stop tracking after [END DATE].
What to change
- [PRODUCT NAME]: The exact model, e.g. "Sony WH-1000XM5 headphones, black".
- [PRODUCT LINKS]: One or more product pages from different stores.
- [CHECK TIME]: e.g. 9:00. Once a day is enough for most products.
- [TARGET PRICE]: The price you’d happily pay, with currency, e.g. "$280".
- [WHERE TO SEND IT]: WhatsApp, Telegram, Slack, Discord or email.
- [SUMMARY DAY]: e.g. "Sunday", or write "never" for alerts only.
- [END DATE]: When to stop, e.g. "December 31" or "I buy it".
Example result
- Price alert · Aria ANC 900 headphones
- The price dropped below your $280 target.
- Volta Electronics · $269 · free shipping · in stock
- Link: voltaelectronics.example/aria-anc-900
- This is the lowest price I’ve seen since I started tracking 18 days ago (previous low: $289).
- All stores today
- • Volta Electronics: $269, free shipping, in stock
- • SoundHub: $299 + $6 shipping, in stock
- • MegaMart: $289, free shipping, only in silver
- Price history (lowest per day)
- • Sep 20: $319
- • Sep 27: $299
- • Oct 4: $289
- • Oct 8: $269
- Before you buy
- • Volta’s return window is 30 days (from its returns page).
- • SoundHub sometimes matches prices; you could ask them.
- • This looks like a pre-holiday sale. Prices may dip again around Black Friday, but there’s no guarantee.
- Reply "keep tracking" to keep watching for a lower price, or "stop" if you bought it.
How to do it with todo.is
- Copy the prompt and fill in the [brackets] with the product, links and your target price.
- Paste it into todo.is, or message it to your agent on WhatsApp or Telegram.
- Your agent sets up a recurring check and messages you only when the price goes under your target.
- Reply "stop" when you’ve bought it, or "add this link" to track another store.
Tips
- Use the exact model and color. Stores often list similar versions at different prices.
- Track the same product on 2 or 3 stores to catch the best deal, not just a drop on one.
- If a store only shows prices when you’re signed in, connect your own Chrome with the todo.is Connector.
- Your agent never buys anything without your OK. You click buy yourself, or say yes when it asks.
FAQ
- Which stores does the price tracker work with? Any store with a public product page your agent can open in a browser. Some sites block automated visits; if that happens your agent tells you, and you can connect your own Chrome instead.
- How often does it check the price? As often as you set in the to-do, usually once or twice a day. Each check uses some AI credits, so daily is a good balance.
- Will it buy the product for me? No, not on its own. Your agent asks for your OK before paying for anything.
- Can I track flights or hotels too? Yes, as long as the price is on a page your agent can open. Give it the search details and target price the same way.
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