Global Price Comparison

Discover and compare the same product across multiple countries and source types (official stores, marketplaces, retailers) using Brave and/or Tavily web search, then normalize all offers to USD for ranking and spread analysis. Use when users ask for global product price comparison, cross-country official price checks, or cheapest-market analysis.

Use this skill to run a global same-product price scan and output a USD-normalized comparison.

Quick start

bash

# 1) Create a starter CSV template
python scripts/global_price_compare.py template --out /tmp/offers.csv

# 2) (Optional) discover candidate links by country/source type
# Uses Brave and Tavily when available (BRAVE_API_KEY / TAVILY_API_KEY)
python scripts/global_price_compare.py discover \
  --product "iPhone 16 Pro 256GB" \
  --countries US,JP,DE,UK \
  --source-types official_store,marketplace,electronics_retailer \
  --engine all \
  --out /tmp/discover.json

# 3) Fill /tmp/offers.csv with verified offers, then compare
python scripts/global_price_compare.py compare \
  --input /tmp/offers.csv \
  --format markdown

Workflow

1. Define exact product variant (model/storage/spec).
2. Run discover to get candidate URLs by market and source type.
3. Add verified offers to CSV (product,country,currency,source_type,source_name,price,url).
4. Run compare to normalize all prices to USD and rank best/worst.
5. Share markdown/JSON/CSV output.

Commands

Template

bash

python scripts/global_price_compare.py template --out /tmp/offers.csv

Discover candidate links

bash

python scripts/global_price_compare.py discover \
  --product "PlayStation 5 Slim" \
  --countries US,JP,DE \
  --source-types official_store,marketplace,electronics_retailer \
  --engine all \
  --count 3 \
  --format markdown

Notes:

• discover supports --engine brave|tavily|all (default all).
• For all, it uses Brave first and only falls back to Tavily when Brave fails or returns no results.
• Set one or both keys as needed: BRAVE_API_KEY, TAVILY_API_KEY.
• Source types are intentionally generic (not local-store specific).

Compare offers in USD

bash

python scripts/global_price_compare.py compare \
  --input /tmp/offers.csv \
  --format markdown \
  --out /tmp/comparison.csv

Outputs include:

• ranked offers by USD price
• delta vs best offer
• spread in USD and %

Defaults

Default country set:

• US, UK, JP, DE, FR, CA, AU, SG, HK, TW

Default source types:

• official_store
• marketplace
• electronics_retailer
• general_retailer

Data/quality guardrails

Before finalizing recommendations:

• confirm same model/variant
• confirm tax/shipping basis consistency
• separate new vs refurbished/used
• keep URL + timestamp evidence

Detailed schema + guardrails:

• references/data-shape-and-source-types.md

Resources

• Script: scripts/global_price_compare.py
• Reference: references/data-shape-and-source-types.md