Any refund for my 1PW Single license when upgrading to family license?

Welcome to the forums @Wiehrdt!

The answer to your question depends on how the two of you plan to use 1Password. If you want a solution that makes your data available on the web, allows you to share vaults with each other, and has access to the latest-and-greatest features and apps, 1Password Families is definitely worth looking into. It would cost a total $60 per year for the two of you to use 1Password Families in this way.

If you don't plan to share passwords with each other, or are comfortable sharing a vault with the steps outlined in this guide, you can purchase a license for her. That option would require you to unlock Pro features on mobile devices on an ad hoc basis, and would also require you to pay for upgrades to the 1Password apps in the future, but doesn't have a recurring cost you'd have to take care of each month/year.

I personally am setting up my wife with 1Password Families, and already got my dad to use it too. It's cheaper than buying them each licenses, I don't have to troubleshoot any questions they have about syncing, and I can easily share information like banking info or credit card numbers with her in a secure, convenient way. But it really depends on what you're looking for from 1Password :)

@Wiehrdt my pleasure! :)