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Business Data API lets you leverage full Google Hotels platform capabilities. You can obtain Google Hotels SERPs using a Hotel Search endpoint, and then extract all publicly available information about the certain hotel with a Hotel Info endpoint.
Both endpoints of Google Hotels API return data specific to the parameters you define when setting an API task. Hotels Info implies billing for each hotel entity specified when setting a task, while Hotel Searches will bill your account for each 20 organic Google Hotels SERP elements (hotel entities) returned in the results.
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If the load_prices_by_dates parameter is applied in the Hotel Info endpoint, the price for setting a task will be multiplied by two