Enums of price extension price qualifier.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/enums/price_extension_price_qualifier.proto)

| Enums ||
|---|---|
| ## `AVERAGE` | 'Average' qualifier for the price. |
| ## `FROM` | 'From' qualifier for the price. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `UP_TO` | 'Up to' qualifier for the price. |