AggregateOffer

When a single product that has different offers (for example, the same pair of shoes is offered by different merchants), then AggregateOffer can be used.

Property	Expected Type	Description
Properties from Thing
`additionalType`	URL	An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.
`description`	Text	A short description of the item.
`image`	URL	URL of an image of the item.
`name`	Text	The name of the item.
`url`	URL	URL of the item.
Properties from Offer
`acceptedPaymentMethod`	PaymentMethod	The payment method(s) accepted by seller for this offer.
`addOn`	Offer	An additional offer that can only be obtained in combination with the first base offer (e.g. supplements and extensions that are available for a surcharge).
`advanceBookingRequirement`	QuantitativeValue	The amount of time that is required between accepting the offer and the actual usage of the resource or service.
`aggregateRating`	AggregateRating	The overall rating, based on a collection of reviews or ratings, of the item.
`availability`	ItemAvailability	The availability of this item—for example In stock, Out of stock, Pre-order, etc.
`availabilityEnds`	DateTime	The end of the availability of the product or service included in the offer.
`availabilityStarts`	DateTime	The beginning of the availability of the product or service included in the offer.
`availableAtOrFrom`	Place	The place(s) from which the offer can be obtained (e.g. store locations).
`availableDeliveryMethod`	DeliveryMethod	The delivery method(s) available for this offer.
`businessFunction`	BusinessFunction	The business function (e.g. sell, lease, repair, dispose) of the offer or component of a bundle (TypeAndQuantityNode). The default is http://purl.org/goodrelations/v1#Sell.
`category`	PhysicalActivityCategory or Text or Thing	A category for the item. Greater signs or slashes can be used to informally indicate a category hierarchy.
`deliveryLeadTime`	QuantitativeValue	The typical delay between the receipt of the order and the goods leaving the warehouse.
`eligibleCustomerType`	BusinessEntityType	The type(s) of customers for which the given offer is valid.
`eligibleDuration`	QuantitativeValue	The duration for which the given offer is valid.
`eligibleQuantity`	QuantitativeValue	The interval and unit of measurement of ordering quantities for which the offer or price specification is valid. This allows e.g. specifying that a certain freight charge is valid only for a certain quantity.
`eligibleRegion`	GeoShape or Text	The ISO 3166-1 (ISO 3166-1 alpha-2) or ISO 3166-2 code, or the GeoShape for the geo-political region(s) for which the offer or delivery charge specification is valid.
`eligibleTransactionVolume`	PriceSpecification	The transaction volume, in a monetary unit, for which the offer or price specification is valid, e.g. for indicating a minimal purchasing volume, to express free shipping above a certain order volume, or to limit the acceptance of credit cards to purchases to a certain minimal amount.
`gtin13`	Text	The GTIN-13 code of the product, or the product to which the offer refers. This is equivalent to 13-digit ISBN codes and EAN UCC-13. Former 12-digit UPC codes can be converted into a GTIN-13 code by simply adding a preceeding zero.
`gtin14`	Text	The GTIN-14 code of the product, or the product to which the offer refers.
`gtin8`	Text	The GTIN-8 code of the product, or the product to which the offer refers. This code is also known as EAN/UCC-8 or 8-digit EAN.
`includesObject`	TypeAndQuantityNode	This links to a node or nodes indicating the exact quantity of the products included in the offer.
`inventoryLevel`	QuantitativeValue	The current approximate inventory level for the item or items.
`itemCondition`	OfferItemCondition	A predefined value from OfferItemCondition or a textual description of the condition of the product or service, or the products or services included in the offer.
`itemOffered`	Product	The item being sold.
`mpn`	Text	The Manufacturer Part Number (MPN) of the product, or the product to which the offer refers.
`price`	Number or Text	The offer price of a product, or of a price component when attached to PriceSpecification and its subtypes.
`priceCurrency`	Text	The currency (in 3-letter ISO 4217 format) of the offer price or a price component, when attached to PriceSpecification and its subtypes.
`priceSpecification`	PriceSpecification	One or more detailed price specifications, indicating the unit price and delivery or payment charges.
`priceValidUntil`	Date	The date after which the price is no longer available.
`review`	Review	A review of the item.
`reviews`	Review	Review of the item (legacy spelling; see singular form, review).
`seller`	Organization or Person	The seller.
`serialNumber`	Text	The serial number or any alphanumeric identifier of a particular product. When attached to an offer, it is a shortcut for the serial number of the product included in the offer.
`sku`	Text	The Stock Keeping Unit (SKU), i.e. a merchant-specific identifier for a product or service, or the product to which the offer refers.
`validFrom`	DateTime	The beginning of the validity of offer, price specification, or opening hours data.
`validThrough`	DateTime	The end of the validity of offer, price specification, or opening hours data.
`warranty`	WarrantyPromise	The warranty promise(s) included in the offer.
Properties from AggregateOffer
`highPrice`	Number or Text	The highest price of all offers available.
`lowPrice`	Number or Text	The lowest price of all offers available.
`offerCount`	Integer	The number of offers for the product.

Schema Draft Version 1.0a

Example 1

Original HTML:

<a href="nba-miami-philidelphia-game3.html">
NBA Eastern Conference First Round Playoff Tickets:
 Miami Heat at Philadelphia 76ers - Game 3 (Home Game 1)
</a>

Thu, 04/21/16
8:00 p.m.

<a href="wells-fargo-center.html">
Wells Fargo Center
</a>
Philadelphia, PA

Priced from: $35
1938 tickets left

With Microdata:

<div itemscope itemtype="http://schema.org/Event">
  <a itemprop="url" href="nba-miami-philidelphia-game3.html">
  NBA Eastern Conference First Round Playoff Tickets:
  <span itemprop="name"> Miami Heat at Philadelphia 76ers - Game 3 (Home Game 1) </span>
  </a>

  <meta itemprop="startDate" content="2016-04-21T20:00">
    Thu, 04/21/16
    8:00 p.m.

  <div itemprop="location" itemscope itemtype="http://schema.org/Place">
    <a itemprop="url" href="wells-fargo-center.html">
    Wells Fargo Center
    </a>
    <div itemprop="address" itemscope itemtype="http://schema.org/PostalAddress">
      <span itemprop="addressLocality">Philadelphia</span>,
      <span itemprop="addressRegion">PA</span>
    </div>
  </div>

  <div itemprop="offers" itemscope itemtype="http://schema.org/AggregateOffer">
    Priced from: <span itemprop="lowPrice">$35</span>
    <span itemprop="offerCount">1938</span> tickets left
  </div>
</div>

Example 2

Original HTML:

<img src="dell-30in-lcd.jpg" />
Dell UltraSharp 30" LCD Monitor

87 out of 100 based on 24 user ratings

$1250 to $1495 from 8 sellers

Sellers:
<a href="save-a-lot-monitors.com/dell-30.html">
  Save A Lot Monitors - $1250</a>
<a href="jondoe-gadgets.com/dell-30.html">
  Jon Doe's Gadgets - $1350</a>
...

With Microdata:

<div itemscope itemtype="http://schema.org/Product">
  <img itemprop="image" src="dell-30in-lcd.jpg" />
  <span itemprop="name">Dell UltraSharp 30" LCD Monitor</span>

  <div itemprop="aggregateRating"
    itemscope itemtype="http://schema.org/AggregateRating">
    <span itemprop="ratingValue">87</span>
    out of <span itemprop="bestRating">100</span>
    based on <span itemprop="ratingCount">24</span> user ratings
  </div>

  <div itemprop="offers" itemscope itemtype="http://schema.org/AggregateOffer">
    <span itemprop="lowPrice">$1250</span>
    to <span itemprop="highPrice">$1495</span>
    from <span itemprop="offerCount">8</span> sellers

  Sellers:
  <div itemprop="offers" itemscope itemtype="http://schema.org/Offer">
    <a itemprop="url" href="save-a-lot-monitors.com/dell-30.html">
     Save A Lot Monitors - $1250</a>
  </div>
  <div itemprop="offers" itemscope itemtype="http://schema.org/Offer">
    <a itemprop="url" href="jondoe-gadgets.com/dell-30.html">
     Jon Doe's Gadgets - $1350</a>
  </div>
  ...
</div>