> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/ProductCoreAttributes).

A collection of attributes that offer more information about a specific product.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/services/reach_plan_service.proto)

| Fields ||
|---|---|
| ## `buying_method` | `ReachPlanBuyingMethod` The method of buying this product. For example, Auction pricing is dynamic and Reservation is booked at a fixed price. |
| ## `cost_model` | `ReachPlanCostModel` How an advertiser pays for their ad campaign. |
| ## `marketing_objective` | `ReachPlanMarketingObjective` A specific, measurable goal that a company wants to achieve through its marketing efforts. |