Allow app developers to test monetization flow in their app

This request is to test the subscription flow of our own apps, without the need to pay for an instance we won’t use or having to wait for the trial to end.

Why this is important

Today, developers cannot test our their monetization flow unless their app is in the marketplace already.

When they do test it, they need to use a test account and actually pay for their app.

This test account is usually a free or developer tier account, meaning devs cannot test their app against larger plan sizes or tiers.

Originally posted by @jarisanders , reposting for convenience.