title: SKProduct returned via productsRequest:didReceiveResponse does not have .introductoryPrice in production, but sandbox is as expected
body: <p>We have an IAP setup with a free trial. In sandbox, we see the expected trial period for this product ID.
  In production (and when I build locally using Release config), .introductoryPrice for the same identifier is nil.
  I have verified that the IAP is setup in AppStore. This is a product ID that's been around for quite some time,
  I believe the only recent change was editing the Subscription Group it belongs to but no edits to the IAP itself.</p>
  <p>Where could the problem be?</p>