You are helping me build the following AI agent workflow.

## Goal
Amazon Price Monitoring & Alerts: Monitors Amazon prices from your sheet and alerts you via Telegram or email when costs spike or drop.

## Specification
- What it does: Get instant Telegram or Gmail alerts when Amazon prices spike or drop so you can react immediately. This system reads your Google Sheets for product URLs and baseline costs, then uses Decodo and code logic to notify stakeholders only when significant changes occur.
- Trigger: On a schedule (Scheduled · continuous loop)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - Google Sheets: Store product URLs and baseline prices
  - Decodo: Scrape real-time Amazon price data
  - Code: Calculate percentage difference between prices
  - Telegram: Send alerts for high price increases
  - Gmail: Send rich HTML emails for price drops

## Known pitfalls, handle each one explicitly in your implementation
1. Amazon frequently blocks automated scrapers so you must implement random delays or proxy rotation to avoid IP bans.
2. Price formats may vary across different product pages, parse the scraped text carefully to ensure numeric calculations remain accurate.
3. Google Sheets rows might shift or contain blank values, add validation checks in the Code node to skip invalid entries before processing.

## Reference implementation
https://n8n.io/workflows/10925 (workflow template)
Fetch and inspect this before building. If it matches my stack, adapt it;
if not, rebuild the pattern with my tools.

## Process requirements
1. Before building: ask me which of the listed tools I actually use and
   what my platform is (n8n / Make / code / other). Do not assume.
2. Adapt the pattern to my answers; do not force the reference stack.
3. Address every pitfall above; tell me how you handled each.
4. Provide a test plan I can run before letting this touch real data.
5. Ask before any step that sends messages, modifies data, or spends money.

Source: https://usecasesforagents.com/use-case/automated-amazon-price-monitoring-alerts/ via usecasesforagents.com