This is definitely a must-have plugin for my projects. Clients always ask for these features and Admin Columns is the go-to “you’ll want this”. Usually the right way to go about this is to sell your client on the plugin that you recommend and they sign up for it and pay the amount themselves for their own license. (Not sure if you’re talking about a web development shop or not)
I’m the lead developer of Pods, and I just contacted the Admin Columns team to ask if they would make the Pods add-on available for the Personal plan level. This would be fantastic for Pods because there are many people who build with Pods but only have one site. I’m not sure if your case here is for one site or more, but the pricing on this plugin is definitely worth it in terms of functionality and support.
Think of it this way — have you ever donated to or paid for Pods personally? Or at your work? It’s a free plugin — and that’s totally fine! But if you wanted to see more features developed and you are making money off of the solutions you build with Pods, you might consider donating to help support the growth of Pods. That goes for Admin Columns Pro here but you aren’t just supporting the free/pro product, you’re also getting features they work hard to maintain support for on third party plugins which all differ vastly in their implementations.
I know we spent a good deal of time going back and forth with Admin Columns support for Pods. Their team is in charge of supporting that and helping their customers do even more cool things with their features. That’s a pretty awesome deal that I love to support.
Maybe reconsider your rating here, or perhaps reconsider the way you value free over premium solutions and how those free solutions can continue to survive without time/resources from those who develop it. It means the world when people see the value in your product, and determining what is overpriced is all about the perspective you have of the work that goes into those products.