Best Reliable Way to Get the Actual Selling Price of AliExpress Products (Final Price for Buyers)?

Hey developers 👋

I'm working on a tool to track real-time selling prices of products on AliExpress, and I'm running into some inconsistencies between listed prices and the actual price a buyer pays at checkout (after applying dynamic discounts, seller coupons, shipping costs, and region-based adjustments).

I'm specifically looking for a reliable, developer-friendly method to fetch the final price that reflects what users actually pay. Here's what I’ve explored so far:
🔎 Current Considerations:

AliExpress Open Platform (Affiliate API):
Good for basic price data, but doesn’t always reflect location-based final prices or coupons.

Web scraping with user simulation (via Puppeteer/Playwright):
Can load dynamic content and simulate a real user session (with country, currency, login state), but this feels fragile and possibly against TOS.

Third-party pricing APIs or proxies that cache regional pricing.

Intercepting XHR/API calls in browser DevTools to find internal price endpoints.

🎯 My goal:

To programmatically obtain the final checkout price for a product URL, ideally with:

Country/currency as input (e.g., Algeria, USD/EUR/DZD)

Real-time application of AliExpress deals & seller coupons

Ability to process multiple products via API or script

❓Anyone figured this out?

Would really appreciate tips, libraries, or even request headers/cookies/configs that could help simulate a full buyer session (or access internal endpoints reliably).

Thanks in advance!