You can specify the following parameters in a GetResearchTrendData input query:

• Keywords
  Includes minus keywords and quoted keywords.
  
  
• Date Ranges
  Trend up to 90 days at a time.
  
  
• Category Limits
  Search any category and all of it's children categories.
  
  
• Price Ranges
  Filter listings by start and end price.
  
  
• Listing Promotion Filters
  Filter listings by the promotions they used (Bold, Gallery, etc)
  
  
• Listing Type Filters
  Filter listings by the type (Bid, Store, Fixed Price, etc)
  
  
• Hour of Day Filters
  Filter listings by the hour of the day that they closed in
  
  
• SiteID and Currency
  Search items from International eBay sites and convert results into many currencies.
  
  
• Breakdown
  Return data grouped by week, day, or even hour.
  
  

The following documentation is available for GetResearchTrendData Input:

• Schema
• Field Reference
• Example Input