Google Play developer console: beta test paid apps for free? [closed]

Question

I've uploaded an apk as a beta version (beta testing section) in Google Play developer console and I'd like to let my users to test it. Final version will be paid and you can't change this choice after testing so I had to set it as paid at the beginning. The problem is I don't want to charge my users for testing and it seems there is no way to do so. Is there?

Answer 1

I guess the usual pattern is to create 2 apps, 1 for "beta" and another one paid. Then you can set up a trial period for the beta, and if you need - extend the trial period with every update or so.

Well I think there more are options for this.