Best Price Guarantee. If you find a lower room price for a one-night stay, or a lower average nightly room price for a multi-night stay, on a non-IHG website within 24 hours after booking on one of IHG’s websites for the same stay, we will provide you with the first night’s room price at the IHG hotel free and match the lower average nightly price found for your entire stay for the rest of the nights of your stay after verification of the lower average nightly price.