Know before your
customers do.
DiffScout monitors any competitor pricing page and alerts you the moment a price changes — so you respond in hours, not days.
How DiffScout works
5 extraction methods, tried in order
Most tools use one brittle CSS selector and break the moment a site redesigns. DiffScout runs a waterfall — cheapest method first, escalating only when needed.
01
JSON-LD
Structured data from <script> tags — instant and zero-cost.
02
DOM Selectors
CSS patterns targeting common price elements in the HTML.
03
Jina Reader
Clean text extraction via r.jina.ai — handles many SPAs.
04
Firecrawl
Paid bot-bypass API. Gets through Cloudflare and JS rendering.
05
AI Vision
Claude reads a screenshot. Works on anything a human can see.
Use cases
Built for every pricing surface
From Shopify stores to SaaS pricing pages — if a price is public, DiffScout can watch it.
E-commerce & Shopify
Track product pages on any Shopify store or custom storefront. See exact price changes across variants and SKUs. Works with sale events, clearance pricing, and flash discounts.
$89.99 → $74.99 (−17%)SaaS & Software
Monitor pricing pages with monthly/annual toggles and per-seat tiers. Our AI reads through JavaScript-rendered pricing grids — no brittle selectors that break on redesigns.
$49/mo → $39/mo (−20%)MAP Monitoring
Catch unauthorized below-MAP pricing on distributor and reseller pages the day it happens. Document violations with timestamps and historical price charts.
Violation detected: $179 → $139Amazon & Marketplace
Track ASIN listings, Buy Box prices, and Amazon product pages automatically. Works with sponsored products, third-party sellers, and standard catalog pages.
Buy Box: £32.99 → £27.49 (−17%)What you receive
Alerts that tell you exactly what changed
No cryptic webhook payload to decode. Every alert surfaces the old price, the new price, the percentage change, and the exact time it was detected. One click opens the full history chart.
Gymshark Vital Shorts
gymshark.com/products/vital-seamless-shorts
Checked: Today at 9:42 am · Change direction: Down
View full history →Why DiffScout
Manual monitoring doesn't scale
Spreadsheets and browser bookmarks got you this far. Here's what you're giving up by not automating.
FAQ
Common questions
What websites can DiffScout monitor?
Any public page with visible pricing: Shopify stores, SaaS pricing pages, Amazon listings, D2C brand sites, B2B product pages, and marketplace listings. If a price is visible in a browser, DiffScout can monitor it.
How often does it check for price changes?
Business plan: every 30 minutes. Pro plan: daily or weekly. Starter plan: daily or weekly. Free plan: daily checks. Upgrade at any time to increase check frequency.
How accurate is AI price extraction?
Very accurate. The 5-method waterfall means DiffScout tries structured data first (JSON-LD), then DOM selectors, then Jina text extraction, then Firecrawl, then Claude AI vision as a final fallback. Accuracy exceeds 95% across tested pages.
What does a price change alert include?
Each alert includes: old price, new price, percentage change, direction (up or down), the exact check timestamp, and a direct link to view the full price history chart for that monitor.
Can I monitor private or login-required pages?
No. DiffScout monitors publicly accessible pages only. If a pricing page requires a login to view, DiffScout cannot extract it.
Related reading
Start monitoring competitors
in 2 minutes
Paste a URL. Describe the price you want to track. DiffScout handles the rest — no engineers, no code, no brittle scrapers.