getIntroductorySubPrice
Formatted introductory price (the discounted, finite-recurring phase) across all offers of a subscription.
Scans every offer attached to the product and returns the first one that exposes an introductory pricing phase. Returns empty string if no offer has an intro price or the product is not a subscription.
Return
Locale-formatted intro price (e.g. "$1.99"), or empty string.
Parameters
productId
Subscription product id.