Check product prices and stock status with PriceFetch before publishing affiliate content. Automate daily verification of existing links to keep your site accurate.
Affiliate content lives or dies on trust. When your "Best Deals Under $50" article links to a product that now costs $79, you lose credibility. When your product roundup links to an out-of-stock item, you lose the click and the commission.
The problem scales with your catalog. A site with 500 affiliate articles containing 10 product links each has 5,000 URLs that could go stale at any time. Retailers change prices daily. Products go out of stock. Listings get removed.
Manual checking doesn't work past a few dozen links. Automated price verification does. Use PriceFetch to check every product URL on your site, verify the price matches what you've published, and flag discrepancies for update.
Before publishing any affiliate content, verify every product price and link. This takes minutes with PriceFetch and prevents embarrassing inaccuracies.
The workflow: extract all product URLs from your draft content, batch-check them against PriceFetch, and verify the prices match your claims. If your article says "currently $29.99" but the product is actually $39.99, update the copy before publishing.
import requests
import re
API_KEY = "pf_live_abc123"
def verify_article_prices(article_html: str) -> list[dict]:
"""Extract product URLs from article and verify prices."""
# Find Amazon/Walmart/etc URLs in the content
url_pattern = r'https?://(?:www\.)?(?:amazon\.com|walmart\.com)/[^\s"<>]+'
urls = re.findall(url_pattern, article_html)
results = []
for url in set(urls): # Deduplicate
resp = requests.get(
"https://api.pricefetch.dev/v1/price",
params={"url": url},
headers={"X-API-Key": API_KEY},
timeout=30,
)
data = resp.json()
if data["success"]:
results.append({
"url": url,
"price": data["data"]["price"],
"currency": data["data"]["currency"],
"in_stock": data["data"]["in_stock"],
"status": "ok",
})
else:
results.append({
"url": url,
"status": "error",
"error": data["error"]["code"],
})
return resultsPublished content needs ongoing monitoring. Set up a daily or weekly job that:
1. **Crawls your site** — extract all affiliate product URLs from your published pages. Maintain a database of article-to-URL mappings.
2. **Checks each URL** — fetch the current price and stock status from PriceFetch.
3. **Compares against published claims** — if your article says "$29.99" and the product is now "$49.99", flag it.
4. **Flags issues by severity:** - Out of stock — high priority, the link generates no commission - Price increased significantly (>20%) — update the copy, or the reader feels misled - Product removed (PAGE_LOAD_FAILED) — broken link, needs replacement - Minor price change (<10%) — low priority, update when convenient
5. **Generates a report** — send yourself a weekly digest of stale links and price mismatches. Prioritize updates by traffic — fix issues on your highest-traffic articles first.
Some affiliate sites publish deal content — "Today's Best Deals" or "Price Drops This Week." This content is inherently time-sensitive and perfect for automation.
The pattern: maintain a watchlist of products you'd promote if the price dropped. Check them daily with PriceFetch. When a price drops below your threshold, auto-generate a deal post or add it to your deals page.
This works well for coupon/deal sites, price comparison tools, and "best of" roundup pages that update regularly. The key is defining what constitutes a "deal" — typically a price drop of 15%+ from the product's average price over the last 30 days.
Combine this with historical price data from your own monitoring to identify genuine deals versus products that fluctuate around the same price point. A product that "drops" to $25 every two weeks isn't really on sale — it's just variable pricing.
Price data helps you optimize which products to promote. Higher-priced products generally earn higher commissions (most affiliate programs pay a percentage). But conversion rates matter too — a $500 product with a 2% conversion rate may earn less than a $50 product with a 15% conversion rate.
Use PriceFetch to track price trends across your promoted products. When a product's price drops significantly, it might convert better — consider promoting it more prominently. When a product's price increases, conversion typically drops — consider swapping it for an alternative.
Also monitor for price parity across retailers. If a product is $29.99 on Amazon and $24.99 on Walmart, link to Walmart (assuming comparable commission rates). Your readers get a better deal and you build trust.
The affiliate game is increasingly about accuracy and trust. Automated price verification is the foundation for both.
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