The object containing introductory price information for the product.
- iOS 11.2+
- macOS 10.13.2+
- tvOS 11.2+
If you've set up introductory prices in iTunes Connect, the introductory price property will be populated. This property is
nil if the product has no introductory price.
Before displaying UI that offers the introductory price, you must first determine if the user is eligible to receive it. See Offering Introductory Prices in Your App for information on determining eligibility and displaying introductory prices.