AI Price Research for Building Materials

I'm seeking an AI tool to research the highest prices nationwide for a list of used building materials across the entire internet.

Materials include:
- Lumber
- Metal
- Kitchen cabinets
- Toilets
- Windows
- Hardwood flooring
- Doors
- Sinks
- Plumbing fixtures

Key requirements:
- Search across all platforms (Craigslist, eBay, Habitat for Humanity ReStores, Facebook Marketplace, etc.)
- Return the highest prices for each item

Ideal skills:
- Experience with AI and price aggregation
- Familiarity with various online marketplaces
- Ability to compile and present data comprehensively