How do I monitor a website for price changes automatically?

You can automate price monitoring in a few ways, depending on how reliable and scalable you want it to be:

1) Use a change-tracking service (easiest)

Tools like:

• Distill.io
• Visualping
• Wachete
• Browse AI

Let you:

• enter a product page URL
• choose the price element
• get alerts by email, SMS, Slack, etc.

Best for: non-technical users or quick setup.

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2) Use a script that checks the page regularly

If you’re comfortable with code, a small script can:

1. download the page
2. extract the price
3. compare it to the last saved price
4. notify you if it changed

Example approach in Python

• Use requests to fetch the page
• Use BeautifulSoup to parse HTML
• Use cron or Task Scheduler to run it every hour/day

Simple example:

import requests
from bs4 import BeautifulSoup
import json

URL = "https://example.com/product"
HEADERS = {"User-Agent": "Mozilla/5.0"}

r = requests.get(URL, headers=HEADERS)
soup = BeautifulSoup(r.text, "html.parser")

price = soup.select_one(".price").get_text(strip=True)

try:
    with open("last_price.json", "r") as f:
        data = json.load(f)
        last_price = data["price"]
except FileNotFoundError:
    last_price = None

if price != last_price:
    print(f"Price changed: {last_price} -> {price}")
    with open("last_price.json", "w") as f:
        json.dump({"price": price}, f)

Best for: custom monitoring, multiple sites, automation.

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3) Use browser automation for dynamic sites

If the price loads via JavaScript, use:

• Playwright
• Selenium

These open the page like a real browser and can read content after it loads.

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4) Use RSS, APIs, or site notifications if available

Some sites offer:

• product feeds
• official APIs
• “watch this item” alerts
• price-drop notifications

Best option if the site supports it, because it’s more stable and usually allowed.

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Good practices

• Check the site’s terms of service and robots policy
• Don’t scrape too often; use reasonable intervals
• Add retries and logging
• Save historical prices if you want trends
• Handle currency/formatting changes robustly

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If you want, I can help you with one of these:

1. a no-code tool recommendation
2. a Python script
3. a Playwright/Selenium script
4. a setup for email/Slack alerts

If you share the website URL, I can suggest the best method and help you extract the price element.