I had a similar adventure.

I ended up with a Meebook E-Reader P78 Pro. It is an android based e-reader with a stylus and note-taking capabilities. Even has the ability to enable Google Play Store.

I added Kindle, Library, and Audiobookshelf to mine, along with Obsidian and some note taking stuff. it works fairly well, nowhere near perfect, but its also much cheaper than the DC-1.

Maybe look into that also. There might be newer versions or alternatives. Maybe something from Boox