• Subject—BrowseNode IDs of all topics related to items returned by ItemSearch. For example, searching for books about dogs returns, in the Subject bins, BrowseNodes for "Home & Garden," "Animal Care & Pets," "Dogs," and "Educational."

• BrandName—Brands, such as Levi's, Reebok, and Nike, that create the item. Use the name of a brand to filter out similar items made by other companies.

• PriceRange—Minimum and maximum prices for a bin of items. Use the minimum and maximum price values in each bin to filter out items outside of the price range you want.

• SpecialSize—Uncommon sizes an item comes in. Examples are "Plus Size & Tall," "Misses," "Maternity," "Husky," "Petites," and "Big & Tall."

• Merchant—All merchants selling an item. This bin returns all merchants even if MerchantId is set to a single merchant in the ItemSearch request. In the response, the ASINs returned will be specific to the MerchantId specified in the request. The merchants listed in the Merchant bin can be used to list other merchants that sell the same ASIN. There are some items sold by only one merchant. In that case, the Merchant bin returns with only that merchant.

The following list shows which NarrowBy values are returned by each Search Index:

You can take the values in a bin and add them to the ItemSearch query to filter out of the response items that are outside of that bin. To narrow the search results to shirts that cost between $0 and $25, for example, you would add the following Name and its corresponding value as additional parameters in the original ItemSearch request:

&MinimumPrice=0
&MaximumPrice=2499

You could narrow the search results even further by adding an additional parameter to the query. For example, you could specify

&Brand=Levi’s

The response would then only include shirts by Levi’s that cost under $25. You could continue to drill down by adding additional parameters to the request.

Notice that in each case the results were narrowed down by adding the value tagged with Name and its corresponding value to the original ItemSearch request.

• ItemSearch

• BinItemCount

• BinName

• Name

• SearchBinSets

• Value

• None

• None

The following response snippet shows the elements returned by SearchBins.

<Item>
  <ASIN>B00005R2GR</ASIN> 
</Item>
<Item>
  <ASIN>B00076ZDV8</ASIN> 
</Item>
<Item>
  <ASIN>B00092FEEG</ASIN> 
</Item>
<Item>
  <ASIN>B000ADTP1W</ASIN> 
</Item>
<SearchBinSets>
  <SearchBinSet NarrowBy="PriceRange">
    <Bin>
        <BinName>$25-$49</BinName> 
        <BinItemCount>316</BinItemCount> 
    <BinParameter>
        <Name>MinimumPrice</Name> 
        <Value>2500</Value> 
     </BinParameter>
    <BinParameter>
        <Name>MaximumPrice</Name> 
        <Value>4999</Value> 
      </BinParameter>
    </Bin>
  </SearchBinSet>
    <Bin>
      <BinName>$0-$24</BinName> 
      <BinItemCount>280</BinItemCount> 
    <BinParameter>
      <Name>MinimumPrice</Name> 
      <Value>0</Value> 
      </BinParameter>
    <BinParameter>
      <Name>MaximumPrice</Name> 
      <Value>2499</Value> 
      </BinParameter>
      </Bin>
 </SearchBinSet>
        
<SearchBinSet NarrowBy="BrandName">
  <Bin>
    <BinName>Rawlings</BinName> 
    <BinItemCount>71</BinItemCount> 
  <BinParameter>
    <Name>Brand</Name> 
    <Value>Rawlings</Value> 
    </BinParameter>
    </Bin>
  <Bin>
    <BinName>Body Glove</BinName> 
    <BinItemCount>53</BinItemCount> 
  <BinParameter>
    <Name>Brand</Name> 
    <Value>Body Glove</Value> 
    </BinParameter>
    </Bin>
</SearchBinSet>
    
<SearchBinSet NarrowBy="Merchant">
  <Bin>
    <BinName>Sports"R"Us</BinName> 
    <BinItemCount>860</BinItemCount> 
  <BinParameter>
    <Name>MerchantId</Name> 
    <Value>A363XKZVKSMVXW</Value> 
    </BinParameter>
    </Bin>
  <Bin>
    <BinName>Target</BinName> 
    <BinItemCount>8</BinItemCount> 
  <BinParameter>
    <Name>MerchantId</Name> 
    <Value>A1VC38T7YXB528</Value> 
    </BinParameter>
    </Bin>
</SearchBinSet>
  
<SearchBinSet NarrowBy="Subject">
  <Bin>
    <BinName>Categories</BinName> 
    <BinItemCount>860</BinItemCount> 
  <BinParameter>
    <Name>BrowseNode</Name> 
    <Value>3375301</Value> 
    </BinParameter>
    </Bin>
  <Bin>
    <BinName>Baseball</BinName> 
    <BinItemCount>311</BinItemCount> 
  <BinParameter>
    <Name>BrowseNode</Name> 
    <Value>3395731</Value> 
    </BinParameter>
    </Bin>
</SearchBinSet>

Notice that the NarrowBy value is PriceRange.