Product Comparator

The problem

Finding the true best deal on a product is time-consuming. Buyers often get misled by bulk pricing, hidden shipping costs, or unauthorized third-party resellers across fragmented retail sites.

What it does

• Searches major retailers, brand sites, and category-specific stores in parallel for real-time pricing.
• Normalizes pricing data to price-per-unit (oz, count, serving) to ensure apples-to-apples comparisons.
• Evaluates seller legitimacy by distinguishing between direct retailers and third-party marketplace sellers.
• Calculates effective prices by factoring in shipping, bundles, and subscription discounts like Subscribe & Save.
• Outputs an opinionated recommendation with a side-by-side comparison table.

Why this beats prompting it yourself

General prompts often miss hidden costs or fail to calculate price-per-unit correctly across different packaging sizes. This skill enforces a structured normalization workflow and seller verification process that standard LLM searches overlook, ensuring you don't recommend a suspicious marketplace listing just because it has the lowest sticker price.

Use cases

• Compare electronics prices across Best Buy, Amazon, and official brand stores.
• Calculate the cheapest way to buy household bulk goods by normalizing price-per-ounce.
• Verify if a "bundle deal" actually saves money compared to buying individual components.
• Identify authorized sellers for luxury or professional-grade products to avoid counterfeits.