Technically, you can currently produce a decent video game for just $20. You only need the subscription (beyond the first month) if you want future updates… if you’re content with what’s already in, you can cancel the sub as soon as you order it and still have the entire engine/editor/samples for base models, etc… You can also fix whatever you feel isn’t up to your standards, or add new things, and recompile your engine/editor. It won’t be the same engine/editor other UE4 devs (pros and hobbyists) are using, but so what? It’s still an Unreal Engine™ game and you can still sell it as such.