Good and cheap. That’s a tricky combination!
Now, an apology from me. As an old dyed in the wool electrician we get an idea from a while ago and that’s how the world is. But the World moves on, and I’ve done some research And found that certain switches like yours can be configured to provide 2-way functionality. It can do this using something called the Internet (it’s a new thing, apparently).
There’s a great explaining video (below). That shows how to set it up. Not sure if your switches can do this, but worth a try? You’ll still need live and neutral though. Every day is a school day. Secondary, not public for me, by the way. Good luck. Let me know how you get on.
View: https://m.youtube.com/watch?v=W2pcYp2pPWA