As you can see in this thread, we were first on the Marketplace in 2017. However about a year later in 2018, we decided to leave the Marketplace, because it took too long for updates, and only being able to upload the previous 3 engine versions was extremely limiting.
So we moved over to GitHub and provided all our plugins 100% FREE for many years. Then we eventually built out our website in 2021 with purchase options, and moved all our plugins to there, which is where we’ve been ever since.
However, after 6 years we are finally back on the Marketplace:
unrealengine.com/marketplace/product/web-ui
This is because we now have our own website where we can easily manage our plugins for versions 4.23+ and that means we don’t have to worry about the Marketplace limiting us to the previous 3 versions.
So if you don’t use source code builds and just use the vanilla Unreal Editor that comes with the Epic Games Launcher (and stay up-to-date with the latest engine versions) then it may be easier for you to obtain our plugins via the Marketplace instead. It’s also going to be a great way for new developers to discover our plugins, rather than having to randomly find them on the forums when searching.
We also plan to add a bunch of new plugins as well, so keep an eye on our page for future releases: